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* [gcc r12-5929] Ensure VxWorks headers expose C99 features for C++
@ 2021-12-13 13:54 Olivier Hainque
0 siblings, 0 replies; only message in thread
From: Olivier Hainque @ 2021-12-13 13:54 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:b80e6d97a9e2425f2a8b97a436335e0abf9105db
commit r12-5929-gb80e6d97a9e2425f2a8b97a436335e0abf9105db
Author: Olivier Hainque <hainque@adacore.com>
Date: Sat Dec 11 08:46:08 2021 +0000
Ensure VxWorks headers expose C99 features for C++
C++ relies on C99 features since C++11 and libstdc++ down to c++98
checks for C99 features at configure time. Simpler is to request C99
features from system headers unconditionally.
2021-12-11 Olivier Hainque <hainque@adacore.com>
* config/vxworks.h (VXWORKS_OS_CPP_BUILTINS): Define
_C99 for C++.
Diff:
---
gcc/config/vxworks.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/gcc/config/vxworks.h b/gcc/config/vxworks.h
index a89e3d68c62..f76141ffdca 100644
--- a/gcc/config/vxworks.h
+++ b/gcc/config/vxworks.h
@@ -286,6 +286,12 @@ extern void vxworks_asm_out_destructor (rtx symbol, int priority);
if (!flag_isoc99 && !c_dialect_cxx()) \
builtin_define ("_ALLOW_KEYWORD_MACROS"); \
} \
+ /* C++ support relies on C99 features from C++11, even C++98 \
+ for listdc++ in particular, with corresponding checks at \
+ configure time. Make sure C99 features are exposed by the \
+ system headers. */ \
+ if (c_dialect_cxx()) \
+ builtin_define("_C99"); \
} \
while (0)
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2021-12-13 13:54 [gcc r12-5929] Ensure VxWorks headers expose C99 features for C++ Olivier Hainque
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