+2017-10-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ [BZ #22052]
+ * malloc/hooks.c (realloc_check): Use DIAG_IGNORE_NEEDS_COMMENT
+ to silence -O3 -Wall warning with GCC 7.
+
2017-10-14 H.J. Lu <hongjiu.lu@intel.com>
* Makeconfig (+link-static-before-libc): Use the first of
newmem = _int_realloc (&main_arena, oldp, oldsize, nb);
}
+ DIAG_PUSH_NEEDS_COMMENT;
+#if __GNUC_PREREQ (7, 0)
+ /* GCC 7 warns about magic_p may be used uninitialized. But we never
+ reach here if magic_p is uninitialized. */
+ DIAG_IGNORE_NEEDS_COMMENT (7, "-Wmaybe-uninitialized");
+#endif
/* mem2chunk_check changed the magic byte in the old chunk.
If newmem is NULL, then the old chunk will still be used though,
so we need to invert that change here. */
if (newmem == NULL)
*magic_p ^= 0xFF;
+ DIAG_POP_NEEDS_COMMENT;
__libc_lock_unlock (main_arena.mutex);