2419or ErrorCode.ERR_FeatureNotAvailableInVersion12

354return ErrorCode.ERR_FeatureNotAvailableInVersion12;

1765ErrorCode.ERR_FeatureNotAvailableInVersion12,

675Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(11, 24)); 715Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 24)); 874Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 24)); 922Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 24));

2511Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "i").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 32)); 2579Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "i").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(17, 41)); 2688Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "i").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 32)); 3022Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 15)); 3071Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 15)); 3113Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 9)); 3443Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 24) 3580Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(16, 24) 3846Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "s").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 32)); 3964Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "s").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(16, 32)); 4075Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "s").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 32)); 4139Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "s").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(15, 26)); 4179Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "s").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 26));

5034Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new R()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 16)); 5153Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "(await GetC()).GetR()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 16)); 5192Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new R()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 16)); 5274Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new R()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 22)); 5309Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new R()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 22)); 5347Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new R()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 22)); 5383Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 21)); 5434Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new R()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(15, 22));

205Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[Id(^1)]").WithArguments("implicit indexer initializer", "13.0").WithLocation(17, 52), 208Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[Id(^1)]").WithArguments("implicit indexer initializer", "13.0").WithLocation(18, 37) 241Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[Id(^1)]").WithArguments("implicit indexer initializer", "13.0").WithLocation(5, 51) 283Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[Id(^1)]").WithArguments("implicit indexer initializer", "13.0").WithLocation(8, 51) 1725Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[i1]").WithArguments("implicit indexer initializer", "13.0").WithLocation(7, 42), 1728Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[i2]").WithArguments("implicit indexer initializer", "13.0").WithLocation(7, 51), 1731Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[i3]").WithArguments("implicit indexer initializer", "13.0").WithLocation(7, 62) 1767Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[Id(i1)]").WithArguments("implicit indexer initializer", "13.0").WithLocation(7, 42) 1961Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[^1]").WithArguments("implicit indexer initializer", "13.0").WithLocation(8, 40), 1964Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[^2]").WithArguments("implicit indexer initializer", "13.0").WithLocation(8, 49), 1967Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[^3]").WithArguments("implicit indexer initializer", "13.0").WithLocation(8, 60), 1970Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[^2]").WithArguments("implicit indexer initializer", "13.0").WithLocation(8, 73), 1973Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[^4]").WithArguments("implicit indexer initializer", "13.0").WithLocation(8, 82) 2489Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "[Id(r)]").WithArguments("implicit indexer initializer", "13.0").WithLocation(16, 32)

1386Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(nint)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 22), 1389Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(nuint)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 22), 1392Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(System.IntPtr)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 22), 1395Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(System.UIntPtr)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 22)

866Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "OverloadResolutionPriority(1)").WithArguments("overload resolution priority", "13.0").WithLocation(5, 6), 869Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "OverloadResolutionPriority(1)").WithArguments("overload resolution priority", "13.0").WithLocation(9, 6), 872Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "OverloadResolutionPriority(1)").WithArguments("overload resolution priority", "13.0").WithLocation(35, 6));

51Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 6) 84Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 6) 166Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 6) 198Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 6) 283Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(8, 10) 321Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(8, 10) 413Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 6) 445Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 6) 531Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(8, 10) 569Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(8, 10) 815Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(8, 6) 849Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(8, 6) 1036Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(100, 6) 1360Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(200, 10) 1368Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(100, 6) 1415Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(100, 6), 1418Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(200, 10) 1426Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(100, 6) 1435Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(200, 10) 1936Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(200, 10) 1944Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(100, 6) 1991Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(100, 6), 1994Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(200, 10) 2002Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(100, 6) 2011Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "UnscopedRef").WithArguments("ref struct interfaces", "13.0").WithLocation(200, 10) 4393Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(3, 22) 4443Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(5, 26) 5472Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "T").WithArguments("allows ref struct constraint", "13.0").WithLocation(4, 29) 5605Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "T").WithArguments("allows ref struct constraint", "13.0").WithLocation(4, 16) 5869Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "I1").WithArguments("ref struct interfaces", "13.0").WithLocation(5, 17) 7325Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S2()").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 16), 7328Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var s = new S2()").WithArguments("ref struct interfaces", "13.0").WithLocation(10, 16) 7335Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "System.IDisposable").WithArguments("ref struct interfaces", "13.0").WithLocation(2, 24) 7391Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(4, 67) 8736Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S()").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 27) 8743Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "IEnumerable<int>").WithArguments("ref struct interfaces", "13.0").WithLocation(4, 23) 8793Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(6, 65) 8832Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(4, 67) 11817Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach (var i in new S1()) {}").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 9) 11824Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "System.IDisposable").WithArguments("ref struct interfaces", "13.0").WithLocation(10, 24) 11881Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(8, 105), 11884Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(16, 65), 11887Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(17, 75) 14109Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S2()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 22), 14112Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 22) 14167Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S2()").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 22), 14170Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S2()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 22), 14173Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 22), 14176Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var s = new S2()").WithArguments("ref struct interfaces", "13.0").WithLocation(10, 22) 14183Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "IAsyncDisposable").WithArguments("ref struct interfaces", "13.0").WithLocation(5, 24), 14186Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S2()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(25, 22), 14189Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(29, 22) 14256Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(7, 75), 14259Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new T()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 22), 14262Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(13, 22), 14265Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(23, 63) 14313Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(7, 77), 14316Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new T()").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 22), 14319Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(13, 22), 14322Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(23, 63) 16587Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S()").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 33) 16594Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "IAsyncEnumerable<int>").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 23) 16645Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(7, 73) 16688Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(6, 75) 17794Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 15) 17870Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "await foreach (var i in new S1()) {}").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 9), 17873Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 15) 17880Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "IAsyncDisposable").WithArguments("ref struct interfaces", "13.0").WithLocation(14, 24), 17883Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(40, 15) 17953Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(13, 85), 17956Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(21, 65), 17959Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(22, 73), 17962Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(24, 15) 19346Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "new S()").WithArguments("ref struct interfaces", "13.0").WithLocation(6, 27) 19353Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "IEnumerable").WithArguments("ref struct interfaces", "13.0").WithLocation(4, 23) 19403Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(6, 60) 19442Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(4, 62) 20443Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(100, 54) 20456Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Helper.Test").WithArguments("allows ref struct constraint", "13.0").WithLocation(200, 9) 20488Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(100, 54) 20700Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(100, 41) 20713Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "S1").WithArguments("allows ref struct constraint", "13.0").WithLocation(200, 16) 20745Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(100, 41) 29126Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(5, 37), 29129Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "{ 200, 40, 6 }").WithArguments("ref struct interfaces", "13.0").WithLocation(12, 39), 29132Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(20, 62) 29139Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(5, 37), 29142Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(20, 62), 29145Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "I1").WithArguments("ref struct interfaces", "13.0").WithLocation(24, 23) 29207Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Test").WithArguments("allows ref struct constraint", "13.0").WithLocation(4, 17), 29210Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "T").WithArguments("allows ref struct constraint", "13.0").WithLocation(4, 22), 29213Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(5, 33), 29216Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "T").WithArguments("allows ref struct constraint", "13.0").WithLocation(7, 22) 29223Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(5, 33), 29226Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(12, 29), 29229Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ref struct").WithArguments("allows ref struct constraint", "13.0").WithLocation(18, 29)

36Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 17), 39Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "z").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 26)); 64Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 17), 67Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "z").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 26)); 92Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 17), 95Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "z").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 26)); 122Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "R").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 9), 125Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "R").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 16)); 178Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "System.TypedReference").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 9)); 254Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 21), 289Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 17), 327Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 17)); 421Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Span<int>").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 9)); 576Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 17), 579Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 9)); 841Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 9));

38963Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "object.M2()").WithArguments("extensions", "14.0").WithLocation(1, 1), 38966Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "object.M2").WithArguments("extensions", "14.0").WithLocation(2, 19), 38969Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "object.M2").WithArguments("extensions", "14.0").WithLocation(3, 9), 38972Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "object.P2").WithArguments("extensions", "14.0").WithLocation(5, 5));

20485Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 26)); 20950Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(11, 35)); 21165Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "buffer").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 26), 21168Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(11, 26)); 21210Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 26)); 21261Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 26)); 21312Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "buffer").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 26), 21315Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(11, 26)); 21379Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "f").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(21, 35)); 21419Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 35)); 21463Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 35)); 21556Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(13, 35)); 21608Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "f").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(13, 35)); 21906Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(18, 26)); 22228Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(19, 35)); 22410Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "buffer").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(18, 26), 22413Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(19, 26)); 22463Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(18, 26)); 22522Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(18, 26)); 22581Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "buffer").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(18, 26), 22584Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(19, 26)); 22646Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "f").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(20, 35)); 22686Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 35)); 22730Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 35)); 22819Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(11, 35)); 22869Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "f").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(11, 35)); 23427Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(3, 1),

1633Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "l").WithArguments("Lock object", "13.0").WithLocation(5, 7));

19627Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "System.ArgIterator").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 25), 19630Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "var").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 9),

3974Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "params System.ReadOnlySpan<long> a").WithArguments("params collections", "13.0").WithLocation(4, 23) 4068Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "params System.ReadOnlySpan<long> a").WithArguments("params collections", "13.0").WithLocation(22, 30) 4136Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "params System.ReadOnlySpan<long> a").WithArguments("params collections", "13.0").WithLocation(6, 19), 4139Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "params System.ReadOnlySpan<long> b").WithArguments("params collections", "13.0").WithLocation(21, 13) 4183Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "params System.Collections.Generic.IEnumerable<long> a").WithArguments("params collections", "13.0").WithLocation(23, 30) 4307Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "params System.Collections.Generic.IEnumerable<long> a").WithArguments("params collections", "13.0").WithLocation(23, 25)

2390Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "int*").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(37, 40), 2393Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "&x").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(39, 23), 2396Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Local(&x)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(39, 17), 2402Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "M4").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(33, 36),

4390Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(nint)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 22), 4393Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(nuint)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 22)

1298Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "x").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 28)); 1339Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "x").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 28)); 3194Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 17), 3197Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "z").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(13, 21)); 3230Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(14, 13)); 3259Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 13)); 3355Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 17), 3358Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "z").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(11, 21)); 3389Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 13)); 3419Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "y").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 13)); 3457Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Span<int>").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 5)); 3487Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Span<int>").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 5));

15444Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 7), 15447Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "int *").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 10), 15450Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "&i").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 19), 15453Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "p").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 24), 15456Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "IteratorMeth2").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(14, 29)

993Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(15, 9)); 1057Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 9)); 1135Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(33, 9)); 1204Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "foreach").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(17, 9)); 1830Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "ReadOnlySpan<int>").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(4, 1));

1128Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "d").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(3, 9)

281Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Goo").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(4, 56)); 304Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 9)); 327Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 9)); 351Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 35)); 382Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(5, 9), 385Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "int*").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 13), 388Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "int*").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(13, 9)); 424Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 9), 427Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "int *").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 13), 430Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "&x").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 22), 433Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "p").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 14), 436Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "p").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(9, 19)); 471Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(5, 9), 474Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "int *").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 13), 477Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "&x").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(7, 22), 480Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "p").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 14), 483Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "p").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 19)); 613Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(8, 9), 616Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(nint)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(10, 17)); 642Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(5, 9)); 667Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "unsafe").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(5, 9)); 927Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "sizeof(nint)").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(6, 25)); 1129Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "int*").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(5, 9)); 1266Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "M").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(3, 56)); 1549Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "+").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(3, 78)); 1777Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "get").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(5, 9)); 2048Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "get").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(5, 9)); 2304Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "M").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(4, 56)); 3204Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Iterator").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(4, 56)); //this is for putting "unsafe" on an iterator, not for the parameter type 3223Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Iterator").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(4, 56)); //this is for putting "unsafe" on an iterator, not for the parameter type 3262Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Iterator").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(4, 56) 3272Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, "Iterator").WithArguments("ref and unsafe in async and iterator methods", "13.0").WithLocation(4, 56)

271Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, @"\e").WithArguments("string escape character", "13.0").WithLocation(5, 21)); 290Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, @"\e").WithArguments("string escape character", "13.0").WithLocation(5, 22)); 309Diagnostic(ErrorCode.ERR_FeatureNotAvailableInVersion12, @"\e").WithArguments("string escape character", "13.0").WithLocation(5, 19));