diff options
Diffstat (limited to 'malloc/malloc.c')
-rw-r--r-- | malloc/malloc.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index 09e5ff2bce..12908b8f97 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -1333,15 +1333,15 @@ nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ MINSIZE : \ ((req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK) -/* Check if REQ overflows when padded and aligned and if the resulting value - is less than PTRDIFF_T. Returns TRUE and the requested size or MINSIZE in - case the value is less than MINSIZE on SZ or false if any of the previous - check fail. */ -static inline bool -checked_request2size (size_t req, size_t *sz) __nonnull (1) +/* Check if REQ overflows when padded and aligned and if the resulting + value is less than PTRDIFF_T. Returns the requested size or + MINSIZE in case the value is less than MINSIZE, or 0 if any of the + previous checks fail. */ +static inline size_t +checked_request2size (size_t req) __nonnull (1) { if (__glibc_unlikely (req > PTRDIFF_MAX)) - return false; + return 0; /* When using tagged memory, we cannot share the end of the user block with the header for the next chunk, so ensure that we @@ -1359,8 +1359,7 @@ checked_request2size (size_t req, size_t *sz) __nonnull (1) ~(size_t)(__MTAG_GRANULE_SIZE - 1); } - *sz = request2size (req); - return true; + return request2size (req); } /* @@ -3295,8 +3294,8 @@ __libc_malloc (size_t bytes) ptmalloc_init (); #if USE_TCACHE /* int_free also calls request2size, be careful to not pad twice. */ - size_t tbytes; - if (!checked_request2size (bytes, &tbytes)) + size_t tbytes = checked_request2size (bytes); + if (tbytes == 0) { __set_errno (ENOMEM); return NULL; @@ -3443,7 +3442,8 @@ __libc_realloc (void *oldmem, size_t bytes) || __builtin_expect (misaligned_chunk (oldp), 0))) malloc_printerr ("realloc(): invalid pointer"); - if (!checked_request2size (bytes, &nb)) + nb = checked_request2size (bytes); + if (nb == 0) { __set_errno (ENOMEM); return NULL; @@ -3800,7 +3800,8 @@ _int_malloc (mstate av, size_t bytes) aligned. */ - if (!checked_request2size (bytes, &nb)) + nb = checked_request2size (bytes); + if (nb == 0) { __set_errno (ENOMEM); return NULL; @@ -4952,7 +4953,8 @@ _int_memalign (mstate av, size_t alignment, size_t bytes) - if (!checked_request2size (bytes, &nb)) + nb = checked_request2size (bytes); + if (nb == 0) { __set_errno (ENOMEM); return NULL; |