AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-12-26 04:31:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

malloc: Print error when oldsize is not equal to the current size.

Browse Source 
This is used to detect errors early.  The read of the oldsize is
not protected by any lock, so check this value to avoid causing
bigger mistakes.

Reviewed-by: DJ Delorie <dj@redhat.com>
This commit is contained in:
Qingqing Li 2022-09-22 15:32:56 -04:00 committed by DJ Delorie
parent de477abcaa
commit 774d43f27d
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
malloc/malloc.c
View File

@ -4803,7 +4803,8 @@ _int_realloc (mstate av, mchunkptr oldp, INTERNAL_SIZE_T oldsize,
/* oldmem size */
if (__builtin_expect (chunksize_nomask (oldp) <= CHUNK_HDR_SZ, 0)
|| __builtin_expect (oldsize >= av->system_mem, 0))
|| __builtin_expect (oldsize >= av->system_mem, 0)
|| __builtin_expect (oldsize != chunksize (oldp), 0))
malloc_printerr ("realloc(): invalid old size");
check_inuse_chunk (av, oldp);