incompatible-sign.cpp - OpenGrok history log for /llvm-project-15.0.7/clang/test/Sema/incompatible-sign.cpp

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# c6ffe4d7	11-Jan-2021	Hubert Tong <[email protected]>	[clang] Fix message text for `-Wpointer-sign` to account for plain char The `-Wpointer-sign` warning text is inappropriate for describing the incompatible pointer conversion between plain `char` and [clang] Fix message text for `-Wpointer-sign` to account for plain char The `-Wpointer-sign` warning text is inappropriate for describing the incompatible pointer conversion between plain `char` and explicitly `signed`/`unsigned` `char` (whichever plain `char` has the same range as) and vice versa. Specifically, in part, it reads "converts between pointers to integer types with different sign". This patch changes that portion to read instead as "converts between pointers to integer types where one is of the unique plain 'char' type and the other is not" when one of the types is plain `char`. C17 subclause 6.5.16.1 indicates that the conversions resulting in `-Wpointer-sign` warnings in assignment-like contexts are constraint violations. This means that strict conformance requires a diagnostic for the case where the message text is wrong before this patch. The lack of an even more specialized warning group is consistent with GCC. Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D93999 show more ...
# f635bcd1	11-Jan-2021	Hubert Tong <[email protected]>	NFC: Pre-commit test: -Wpointer-sign with plain char to [un]signed char Add tests with bad message text for `-Wpointer-sign` and run them with both signed and unsigned versions of plain `char`.