Author: pfg
Date: Wed Jul  8 16:21:10 2015
New Revision: 285277
URL: https://svnweb.freebsd.org/changeset/base/285277

Log:
  Use the __sentinel attribute.
  
  Start using the gcc sentinel attribute, which can be used to
  mark varargs function that need a NULL pointer to mark argument
  termination, like execl(3).
  
  Relnotes:     yes

Modified:
  head/include/unistd.h

Modified: head/include/unistd.h
==============================================================================
--- head/include/unistd.h       Wed Jul  8 16:20:20 2015        (r285276)
+++ head/include/unistd.h       Wed Jul  8 16:21:10 2015        (r285277)
@@ -327,9 +327,9 @@ int  close(int);
 void    closefrom(int);
 int     dup(int);
 int     dup2(int, int);
-int     execl(const char *, const char *, ...);
+int     execl(const char *, const char *, ...) __sentinel;
 int     execle(const char *, const char *, ...);
-int     execlp(const char *, const char *, ...);
+int     execlp(const char *, const char *, ...) __sentinel;
 int     execv(const char *, char * const *);
 int     execve(const char *, char * const *, char * const *);
 int     execvp(const char *, char * const *);
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