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improve iswdigit macro to diagnose errors 

this is analogous to commit 2ca55a93f2
for the macros in ctype.h.
This commit is contained in:
Rich Felker 2015-05-02 21:17:19 -04:00
parent 7fe273b2c1
commit d0040e239e
2 changed files with 2 additions and 2 deletions
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2
include/wchar.h
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@ -175,7 +175,7 @@ wctype_t wctype(const char *);
#ifndef __cplusplus
#undef iswdigit
#define iswdigit(a) ((unsigned)(a)-'0' < 10)
#define iswdigit(a) (0 ? iswdigit(a) : ((unsigned)(a)-'0') < 10)
#endif
#endif

2
include/wctype.h
View File

@ -45,7 +45,7 @@ wctype_t wctype(const char *);
#ifndef __cplusplus
#undef iswdigit
#define iswdigit(a) (((unsigned)(a)-L'0') < 10)
#define iswdigit(a) (0 ? iswdigit(a) : ((unsigned)(a)-'0') < 10)
#endif
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \