# [PATCH 4/6] Fix an "implicit function definition" warning.

1 messages from 2007-03-03 to 2007-03-03. Participants: Ramsay Jones.
Thread: https://gitlist.dev/t/7067

## Ramsay Jones, 2007-03-03 18:28

Subject: [PATCH 4/6] Fix an "implicit function definition" warning.
Message-ID: <45E9BE64.5030904@ramsay1.demon.co.uk>
URL: https://gitlist.dev/e/45E9BE64.5030904%40ramsay1.demon.co.uk

```

The function at issue being initgroups() from the <grp.h> header
file. On Cygwin, setting _XOPEN_SOURCE suppresses the definition
of initgroups(), which causes the warning while compiling daemon.c.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
---
  git-compat-util.h |    6 ++++++
  1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/git-compat-util.h b/git-compat-util.h
index c1bcb00..e54604e 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -47,9 +47,15 @@
  #include <netdb.h>
  #include <pwd.h>
  #include <inttypes.h>
+#if defined(__CYGWIN__)
+#undef _XOPEN_SOURCE
+#include <grp.h>
+#define _XOPEN_SOURCE 600
+#else
  #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
  #include <grp.h>
  #define _ALL_SOURCE 1
+#endif

  #ifndef NO_ICONV
  #include <iconv.h>
-- 
1.5.0

```