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Prevent secondary warning from diagnostic tweak in gthr-vxworks.h

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Within gthr-vxworks.h, we prevent C++ errors from missing
declarations in some system headers by prepending their inclusion
with a

    #pragma GCC diagnostic ignored "-Wstrict-prototypes"

But Wstrict-prototypes is internally registered as valid for
C/ObjC only, not C++, and this trick in turn triggers a Wpragma
warning with -Wsystem-headers.

This change just arranges to ignore the secondary warning locally.

2021-02-03  Olivier Hainque  <hainque@adacore.com>

	* config/gthr-vxworks.h: Prevent Wpragma warning for the
	pragma diagnostics on Wstrict-prototypes.
This commit is contained in:
Olivier Hainque 2022-02-03 15:57:32 +00:00
parent 6ed7eee30f
commit 372044a67e
1 changed files with 4 additions and 1 deletions
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libgcc/config/gthr-vxworks.h
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@ -38,8 +38,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#include <_vxworks-versions.h>
/* Some VxWorks headers profusely use typedefs of a pointer to a function with
undefined number of arguments. */
undefined number of arguments. Arrange to ignore declaration errors in C++,
which is achievable by ignoring Wstrict-prototypes diagnostics even when the
option is registered as only valid for c/objc. */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpragmas"
#pragma GCC diagnostic ignored "-Wstrict-prototypes"
#include <semLib.h>
#pragma GCC diagnostic pop