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| author | Florian Weimer <fweimer@redhat.com> | 2022-10-13 05:45:41 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2022-10-13 05:45:41 +0200 |
| commit | 15a94e6668a6d7c5697e805d8d67f1d102d0d52e (patch) | |
| tree | bd703f55d1e50d62cfa2572685a194f8eab81a4d | |
| parent | ba0ca36132d72d88f577062520b479b4b97df114 (diff) | |
| download | glibc-15a94e6668a6d7c5697e805d8d67f1d102d0d52e.tar.gz glibc-15a94e6668a6d7c5697e805d8d67f1d102d0d52e.tar.xz glibc-15a94e6668a6d7c5697e805d8d67f1d102d0d52e.zip | |
malloc: Switch global_max_fast to uint8_t
MAX_FAST_SIZE is 160 at most, so a uint8_t is sufficient. This makes it harder to use memory corruption, by overwriting global_max_fast with a large value, to fundamentally alter malloc behavior. Reviewed-by: DJ Delorie <dj@redhat.com>
| -rw-r--r-- | malloc/malloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index 953183e956..2a61c8b5ee 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -1757,7 +1757,7 @@ typedef struct malloc_chunk *mfastbinptr; #define set_contiguous(M) ((M)->flags &= ~NONCONTIGUOUS_BIT) /* Maximum size of memory handled in fastbins. */ -static INTERNAL_SIZE_T global_max_fast; +static uint8_t global_max_fast; /* Set value of max_fast. |