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| author |   Roland McGrath <roland@gnu.org> | 1996-07-04 00:07:18 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 1996-07-04 00:07:18 +0000 |
| commit | 503054c0dd57109017b36870c430dab00fccaa8b (patch) | |
| tree | e3788a147156c19d4cf38cc8da0bfcf8d3c6c109 /sysdeps/generic/sbrk.c | |
| parent | * elf/Makefile (LDFLAGS-dl.so): New variable. (diff) | |
| download | glibc-503054c0dd57109017b36870c430dab00fccaa8b.tar.gz glibc-503054c0dd57109017b36870c430dab00fccaa8b.tar.bz2 glibc-503054c0dd57109017b36870c430dab00fccaa8b.zip | |
Wed Jul 3 16:29:41 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>cvs/libc-960705cvs/libc-960704
* nss/getXXbyYY_r.c (REENTRANT_NAME): Cast FCT in __nss_next call.
* sysdeps/generic/sbrk.c: Always call __brk (0) to update __curbrk.
* malloc/malloc-size.c (malloc_usable_size): Renamed from
malloc_object_allocation_size.
* malloc/malloc.h: Fix decl.
* sys/select.h: New file, wrapper header.
* posix/sys/types.h [__USE_BSD]: Include <sys/select.h>; remove
fd_set, associated macros, and select decl.
* sysdeps/posix/isfdtype.c: New file.
Tue Jul 2 23:45:14 1996 Ulrich Drepper <drepper@cygnus.com>
The latest Japanese proposal for POSIX locales renames the
CHARMAP keyword in locale definition files to CHARCONV.
* locale/programs/ld-ctype.c, locale/programs/locales.h: Rename
function ctype_is_charmap to ctype_is_charconv.
* locale/programs/locfile-kw.gperf: Replace charmap keyword with
charconv.
* locale/programs/locfile-token.h: Add definition of token
charconv.
* locale/programs/locfile.c: Recognize charconv keyword. Rename
lables according to this.
* locale/weight.h (get_weight): Cast constants to prevent
warnings.
* stdlib/strtod.c, stdlib/strtol.c, string/strcoll.c,
string/strxfrm.c: Add some more casts to prevent signed<->unsigned
warnings.
New stuff described in P1003.1g.
* misc/Makefile (headers): Add sys/select.h.
(routines): Add pselect.
* misc/sys/select.h: New file. Declare select functions and
needed data types and macros.
* sysdeps/generic/pselect.c: New file. Add generic implementation
of pselect() function which uses select().
* posix/getconf.c: Recognize new variables from P1003.1g.
* posix/posix1_lim.h: Define _POSIX_FD_SETSIZE, _POSIX_QLIMIT,
_POSIX_HIWAT, and _POSIX_UIO_MAXIOV.
* posix/unistd.h: Add description of the P1003.1g variables.
* sysdeps/generic/confname.h: Define _SC_* values for new
variables.
* sysdeps/posix/fpathconf.c (fpathconf): Add handling of
_PC_SOCK_MAXBUF.
* sysdeps/stub/fpathconf.c (fpathconf): Ditto.
* sysdeps/posix/sysconf.c (sysconf): Add handling of new
P1003.1g variables.
* sysdeps/stub/sysconf.c (sysconf): Ditto.
* sysdeps/unix/sysv/linux/posix_opt.h: Define _POSIX_POLL and
_POSIX_SELECT since Linux has this.
* socket/Makefile (routines): Add isfdtype.
* sysdeps/generic/sys/socket.h: Add prototype for isfdtype.
* sysdeps/stub/isfdtype.c: New file. Stub implementation of
isfdtype.
* wcsmbs/wcrtomb.c (wcrtomb): Fix typo.
Diffstat (limited to 'sysdeps/generic/sbrk.c')
| -rw-r--r-- | sysdeps/generic/sbrk.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sysdeps/generic/sbrk.c b/sysdeps/generic/sbrk.c index de7794697d..698f814e2b 100644 --- a/sysdeps/generic/sbrk.c +++ b/sysdeps/generic/sbrk.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1995 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify @@ -30,7 +30,11 @@ __sbrk (ptrdiff_t increment) { void *oldbrk; - if (__curbrk == 0 && __brk (0) < 0) + /* Always update __curbrk from the kernel's brk value. That way two + separate instances of __brk and __sbrk can share the heap, returning + interleaved pieces of it. This happens when libc.so is loaded by + dlopen in a statically-linked program that already uses __brk. */ + if (__brk (0) < 0) return (void *) -1; if (increment == 0) |