fix signed overflow in ftok

511b7042 · Daniel Sabogal · Rich Felker · 1698fe6c · 511b7042
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src/ipc/ftok.c src/ipc/ftok.c +1 -1

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--- a/src/ipc/ftok.c
+++ b/src/ipc/ftok.c
@@ -6,5 +6,5 @@ key_t ftok(const char *path, int id)
 	struct stat st;
 	if (stat(path, &st) < 0) return -1;

-	return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xff) << 24));
+	return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24));
 }