1 files changed, 1 insertions, 1 deletions
diff --git a/src/util.h b/src/util.h
index 26a9a21..67f5e4d 100644
--- a/src/util.h
+++ b/src/util.h
@@ -74,7 +74,7 @@ enum file_attributes {
 void set_file_attributes (char const *, enum file_attributes, char const *,
 			  struct stat *, mode_t, struct timespec *);
 
-static inline char const *
+static inline char const * _GL_ATTRIBUTE_PURE
 skip_spaces (char const *str)
 {
   while (ISSPACE ((unsigned char) *str))