X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=include%2Fwchar.h;h=0167dce6b577a5f3349b5eef30ba000265560a09;hb=b921e0fd1fc9840fdfc6dde27dc7453047437f0f;hp=ad727a86aefd2ea61c3e4513d9f2f03dd025319f;hpb=a60457c84a4b59ab564d7f4abb660a70283ba98d;p=musl

diff --git a/include/wchar.h b/include/wchar.h
index ad727a86..0167dce6 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -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