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-rw-r--r--kern/strings.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kern/strings.c b/kern/strings.c
index 0752722..c77ae4f 100644
--- a/kern/strings.c
+++ b/kern/strings.c
@@ -53,7 +53,7 @@
* contents are identical upto the length of s1.
*/
-int
+int __attribute__ ((pure))
strcmp(
const char *s1,
const char *s2)
@@ -80,7 +80,7 @@ strcmp(
* comparison runs for at most "n" characters.
*/
-int
+int __attribute__ ((pure))
strncmp(
const char *s1,
const char *s2,
@@ -161,7 +161,7 @@ strncpy(
* the terminating null character.
*/
-size_t
+size_t __attribute__ ((pure))
strlen(
const char *string)
{