From 3b5f801ddb838311b5b05c218caac3bdb00d7c95 Mon Sep 17 00:00:00 2001 From: DJ Delorie Date: Wed, 3 May 2017 16:25:15 -0400 Subject: Tweak realloc/MREMAP comment to be more accurate. MMap'd memory isn't shrunk without MREMAP, but IIRC this is intentional for performance reasons. Regardless, this patch tweaks the existing comment to be more accurate wrt the existing code. [BZ #21411] * malloc/malloc.c: Tweak realloc/MREMAP comment to be more accurate. --- malloc/malloc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'malloc') diff --git a/malloc/malloc.c b/malloc/malloc.c index 068ffc1684..aa45626093 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -514,9 +514,9 @@ void* __libc_calloc(size_t, size_t); REALLOC_ZERO_BYTES_FREES is set, realloc with a size argument of zero (re)allocates a minimum-sized chunk. - Large chunks that were internally obtained via mmap will always - be reallocated using malloc-copy-free sequences unless - the system supports MREMAP (currently only linux). + Large chunks that were internally obtained via mmap will always be + grown using malloc-copy-free sequences unless the system supports + MREMAP (currently only linux). The old unix realloc convention of allowing the last-free'd chunk to be used as an argument to realloc is not supported. -- cgit 1.4.1