Author: pfg
Date: Sun Jan 28 19:37:30 2018
New Revision: 328517
URL: https://svnweb.freebsd.org/changeset/base/328517

Log:
  Avoid implicit gcc nonnull attribute in vwarnx().
  
  We removed the nonnull attributes from our headers long ago, but still
  __printflike() includes it implicitly. This will cause the NULL check to
  be optimized away in higher -O levels and it will also trigger a
  -Wnonnull-compare warning.
  
  Avoid warning with it in vwarnx().
  
  Obtained from:        DragonfLyBSD (git 
6329e2f68af73662a1960240675e796ab586bcb1)

Modified:
  head/include/err.h

Modified: head/include/err.h
==============================================================================
--- head/include/err.h  Sun Jan 28 19:18:40 2018        (r328516)
+++ head/include/err.h  Sun Jan 28 19:37:30 2018        (r328517)
@@ -60,7 +60,7 @@ void  vwarn(const char *, __va_list) __printf0like(1, 0
 void   warnc(int, const char *, ...) __printf0like(2, 3);
 void   vwarnc(int, const char *, __va_list) __printf0like(2, 0);
 void   warnx(const char *, ...) __printflike(1, 2);
-void   vwarnx(const char *, __va_list) __printflike(1, 0);
+void   vwarnx(const char *, __va_list) __printf0like(1, 0);
 void   err_set_file(void *);
 void   err_set_exit(void (* _Nullable)(int));
 __END_DECLS
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