2 Commits

Author	SHA1	Message	Date
Oleksandr Tarasiuk	bf7e2b81e7	[Clang] prevent preprocessor crash on incomplete scoped __has_cpp_attribute arguments (#178273) ... Fixes #178098 --- This patch addressed the issue when `__has_cpp_attribute` is expanded with incomplete scoped attributes. The scoped name parsing can lex to `eof`/`eod` at 3f5a5d45d1/clang/lib/Lex/PPMacroExpansion.cpp (L1877-L1881) and then proceed with 3f5a5d45d1/clang/lib/Lex/PPMacroExpansion.cpp (L1425-L1430) since `eof`/`eod` is not guarded at 3f5a5d45d1/clang/lib/Lex/PPMacroExpansion.cpp (L1367-L1372) this could lead to a preprocessor crash 3f5a5d45d1/clang/lib/Lex/PPMacroExpansion.cpp (L1370)	2026-01-28 15:44:48 +02:00
Aaron Ballman	2edb89c746	Lex arguments for __has_cpp_attribute and friends as expanded tokens ... The C and C++ standards require the argument to __has_cpp_attribute and __has_c_attribute to be expanded ([cpp.cond]p5). It would make little sense to expand the argument to those operators but not expand the argument to __has_attribute and __has_declspec, so those were both also changed in this patch. Note that it might make sense for the other builtins to also expand their argument, but it wasn't as clear to me whether the behavior would be correct there, and so they were left for a future revision.	2021-10-17 07:54:48 -04:00