From: Andre Noll <maan@tuebingen.mpg.de>
Date: Sat, 4 Jun 2016 14:43:43 +0000 (+0200)
Subject: fd.c: Avoid gcc warning regarding fchdir().
X-Git-Url: http://git.tuebingen.mpg.de/?p=adu.git;a=commitdiff_plain;h=6744ce67f91c410f69de0763fb6faa01a8a53b28

fd.c: Avoid gcc warning regarding fchdir().

gcc-4.8.4 on Ubuntu-14.04 complains about our use of fchdir():

	fd.c:181:9: warning: ignoring return value of ‘fchdir’, declared with attribute warn_unused_result [-Wunused-result]
	   fchdir(*cwd);

Silence the warning by introducing a dummy variable. The patch also
fixes the indentation of the comment which explains why we ignore
the return value here.
---

diff --git a/fd.c b/fd.c
index 902e8f1..39e9837 100644
--- a/fd.c
+++ b/fd.c
@@ -176,9 +176,10 @@ int adu_opendir(const char *dirname, DIR **dir, int *cwd)
 	if (*dir)
 		return 1;
 	ret = -ERRNO_TO_ERROR(errno);
-/* Ignore return value of fchdir() and close(). We're busted anyway. */
-	if (cwd)
-		fchdir(*cwd);
+	/* Ignore return value of fchdir() and close(). We're busted anyway. */
+	if (cwd) {
+		int __a_unused ret2 = fchdir(*cwd); /* STFU, gcc */
+	}
 close_cwd:
 	if (cwd)
 		close(*cwd);