diff: silence GCC warning instead of slowing down

* src/dir.c (find_dir_file_pathname): Use 'IF_LINT (volatile)' to
silence the gcc warning, rather than using 'volatile', as the
warning appears to be bogus.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/dir.c b/src/dir.c
index a2f6bba..530807e 100644
--- a/src/dir.c
+++ b/src/dir.c
@@ -323,8 +323,13 @@ dir_loop (struct comparison const *cmp, int i)
 char *
 find_dir_file_pathname (char const *dir, char const *file)
 {
+  /* The 'IF_LINT (volatile)' works around what appears to be a bug in
+     gcc 4.8.0 20120825; see
+     <http://lists.gnu.org/archive/html/bug-diffutils/2012-08/msg00007.html>.
+     */
+  char const * IF_LINT (volatile) match = file;
+
   char *val;
-  char const *volatile match = file;
   struct dirdata dirdata;
   dirdata.names = NULL;
   dirdata.data = NULL;