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-rw-r--r--lib/dirname.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/dirname.h b/lib/dirname.h
index 6e7f1e9dd..821b24e91 100644
--- a/lib/dirname.h
+++ b/lib/dirname.h
@@ -37,9 +37,9 @@ char *dir_name (char const *file);
# endif
char *mdir_name (char const *file);
-size_t base_len (char const *file);
-size_t dir_len (char const *file);
-char *last_component (char const *file);
+size_t base_len (char const *file) _GL_ATTRIBUTE_PURE;
+size_t dir_len (char const *file) _GL_ATTRIBUTE_PURE;
+char *last_component (char const *file) _GL_ATTRIBUTE_PURE;
bool strip_trailing_slashes (char *file);