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Prevent redefinition of WCHAR_MAX from testsuite/gcc.dg/cpp/ucs.c

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gcc/testsuite/gcc.dg/cpp/ucs.c #include <limits.h>
and then crafts a definition of WCHAR_MAX depending
on __WCHAR_TYPE__.

The test fails in VxWorks configurations because WCHAR_MAX
is already exposed by the system limits.h.

The patch simply guards the tentative definition
by a check verifying if the macro is defined already, so
we're using the value exposed by limits.h in this case.

2019-12-30  Olivier Hainque  <hainque@adacore.com>

	* testsuite/gcc.dg/cpp/ucs.c: Prevent redefinition
	of WCHAR_MAX if already exposed by limits.h.

From-SVN: r279795
This commit is contained in:
Olivier Hainque 2019-12-30 22:31:37 +00:00 committed by Olivier Hainque
parent 8ee81b4d27
commit 1cf49e515c
2 changed files with 9 additions and 0 deletions
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5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-12-20 Olivier Hainque <hainque@adacore.com>
* testsuite/gcc.dg/cpp/ucs.c: Prevent redefinition
of WCHAR_MAX if already exposed by limits.h.
2019-12-20 Olivier Hainque <hainque@adacore.com>
Jerome Lambourg <lambourg@adacore.com>

4
gcc/testsuite/gcc.dg/cpp/ucs.c
View File

@ -16,6 +16,8 @@
#define short +2
#define long +3
#if !defined(WCHAR_MAX)
#if __WCHAR_TYPE__ == 0
# define WCHAR_MAX INT_MAX
#elif __WCHAR_TYPE__ == 1
@ -28,6 +30,8 @@
# error wacky wchar_t
#endif
#endif
#undef unsigned
#undef int
#undef char