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* [Bug libc/4792] New: realloc is marked as __attribute_malloc__
@ 2007-07-15 22:28 hjl at lucon dot org
2007-07-20 7:11 ` [Bug libc/4792] " jakub at redhat dot com
0 siblings, 1 reply; 3+ messages in thread
From: hjl at lucon dot org @ 2007-07-15 22:28 UTC (permalink / raw)
To: glibc-bugs
In <stdlib.h>, there are
/* Re-allocate the previously allocated block
in PTR, making the new block SIZE bytes long. */
extern void *realloc (void *__ptr, size_t __size)
__THROW __attribute_malloc__ __attribute_warn_unused_result__;
However, when a function is marked as mallloc-like, gcc assumes it will
return an address which can alias something else. In case like
#include <stdlib.h>
int *p;
p = malloc (4);
*p = 0;
p = realloc (p, 4);
*p = 1;
will have VOPs that do not prevent re-ordering of the two stores.
--
Summary: realloc is marked as __attribute_malloc__
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
AssignedTo: drepper at redhat dot com
ReportedBy: hjl at lucon dot org
CC: glibc-bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=4792
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* [Bug libc/4792] realloc is marked as __attribute_malloc__
2007-07-15 22:28 [Bug libc/4792] New: realloc is marked as __attribute_malloc__ hjl at lucon dot org
@ 2007-07-20 7:11 ` jakub at redhat dot com
0 siblings, 0 replies; 3+ messages in thread
From: jakub at redhat dot com @ 2007-07-20 7:11 UTC (permalink / raw)
To: glibc-bugs
------- Additional Comments From jakub at redhat dot com 2007-07-20 07:10 -------
Changed in CVS.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://sourceware.org/bugzilla/show_bug.cgi?id=4792
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* [Bug libc/4792] realloc is marked as __attribute_malloc__
[not found] <bug-4792-131@http.sourceware.org/bugzilla/>
@ 2020-06-28 13:20 ` fw at deneb dot enyo.de
0 siblings, 0 replies; 3+ messages in thread
From: fw at deneb dot enyo.de @ 2020-06-28 13:20 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=4792
Florian Weimer <fw at deneb dot enyo.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fw at deneb dot enyo.de
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=37036
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-- links below jump to the message on this page --
2007-07-15 22:28 [Bug libc/4792] New: realloc is marked as __attribute_malloc__ hjl at lucon dot org
2007-07-20 7:11 ` [Bug libc/4792] " jakub at redhat dot com
[not found] <bug-4792-131@http.sourceware.org/bugzilla/>
2020-06-28 13:20 ` fw at deneb dot enyo.de
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