diff options
Diffstat (limited to 'malloc')
| -rw-r--r-- | malloc/malloc.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index c3855290f7..e4b693c342 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -2741,8 +2741,19 @@ static void do_check_malloc_state(mstate av) for (i = 0; i < NFASTBINS; ++i) { p = av->fastbins[i]; + /* The following test can only be performed for the main arena. + While mallopt calls malloc_consolidate to get rid of all fast + bins (especially those larger than the new maximum) this does + only happen for the main arena. Trying to do this for any + other arena would mean those arenas have to be locked and + malloc_consolidate be called for them. This is excessive. And + even if this is acceptable to somebody it still cannot solve + the problem completely since if the arena is locked a + concurrent malloc call might create a new arena which then + could use the newly invalid fast bins. */ + /* all bins past max_fast are empty */ - if (i > max_fast_bin) + if (av == &main_arena && i > max_fast_bin) assert(p == 0); while (p != 0) { |