diff options
| author | phk <phk@FreeBSD.org> | 1997-07-01 18:39:38 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 1997-07-01 18:39:38 +0000 |
| commit | a4c209850278391123f7d7565de09fd98e6afcec (patch) | |
| tree | 2c88b1fb23a14c6fbb18ee2eb5aec8089f975677 /lib/libc/stdlib/malloc.3 | |
| parent | a10c1a2949114029b4375969b9303841d9a19235 (diff) | |
| download | FreeBSD-src-a4c209850278391123f7d7565de09fd98e6afcec.zip FreeBSD-src-a4c209850278391123f7d7565de09fd98e6afcec.tar.gz | |
malloc_sysv used before initialized, reported in PR4002 by
Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
Various cleanup from Keith Bostic
Reinstate calloc() as a separate funtion, in its own source/object file.
leave the manpage integrated with malloc.3 and friends. Too many things
were broken in this respect.
PR: 4002
Reviewed by: phk
Submitted by: Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
Submitted by: Keith Bostic <bostic@bostic.com>
Diffstat (limited to 'lib/libc/stdlib/malloc.3')
| -rw-r--r-- | lib/libc/stdlib/malloc.3 | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/libc/stdlib/malloc.3 b/lib/libc/stdlib/malloc.3 index a0262c1..ef77e80 100644 --- a/lib/libc/stdlib/malloc.3 +++ b/lib/libc/stdlib/malloc.3 @@ -34,7 +34,7 @@ .\" SUCH DAMAGE. .\" .\" @(#)malloc.3 8.1 (Berkeley) 6/4/93 -.\" $Id: malloc.3,v 1.11 1997/06/12 12:45:45 phk Exp $ +.\" $Id: malloc.3,v 1.12 1997/06/22 17:54:27 phk Exp $ .\" .Dd August 27, 1996 .Dt MALLOC 3 @@ -119,7 +119,7 @@ is NULL, no action occurs. .Sh TUNING Once, when the first call is made to one of these memory allocation routines, various flags will be set or reset, which affect the -workings of this alloction implementation. +workings of this allocation implementation. .Pp The ``name'' of the file referenced by the symbolic link named .Pa /etc/malloc.conf , @@ -142,9 +142,16 @@ in these cases. .It J Each byte of new memory allocated by .Fn malloc -and +or +.Fn realloc +as well as all memory returned by +.Fn free +or .Fn realloc will be initialized to 0xd0. +This options also sets the +.Dq R +option. This is intended for debugging and will impact performance negatively. .It H Pass a hint to the kernel about pages unused by the allocation functions. @@ -183,8 +190,11 @@ extern char *malloc_options; malloc_options = "X"; .Ed .It Z -Initialize all allocated memory to nul bytes, and overwrite any -surrounding memory necessary for alignment reasons with 0xd0 bytes. +This option implicitly sets the +.Dq J +and +.Dq R +options, and then zeros out the bytes that were requested. This is intended for debugging and will impact performance negatively. .It < Reduce the size of the cache by a factor of two. |
