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* [Bug c/38274] New: why the option "-fstack-protector-all" doesn't works?
@ 2008-11-26 9:26 zuogang at huawei dot com
2008-11-29 3:11 ` [Bug middle-end/38274] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 7+ messages in thread
From: zuogang at huawei dot com @ 2008-11-26 9:26 UTC (permalink / raw)
To: gcc-bugs
source file:
#include <stdio.h>
int main(void)
{
char a = 1;
int b = 2;
short c = 3;
char sztmp[22] = "hello worlds!";
*(int *)&a=0xffff;
sztmp[22]=0;
printf("%s,a:%d,b%d\n",sztmp,a,b);
return 0;
}
invoke gcc by :gcc -fstack-protector-all test.c;
after my debugging a.out, I find the gcc doesn't adding a guard variable to
functions's local stack vars, and the var "sztmp" follows var "a" and there
aren't any room between the two vars.
--
Summary: why the option "-fstack-protector-all" doesn't works?
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zuogang at huawei dot com
GCC host triplet: x86, SUSE 10 ES,
GCC target triplet: X86
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38274
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/38274] why the option "-fstack-protector-all" doesn't works?
2008-11-26 9:26 [Bug c/38274] New: why the option "-fstack-protector-all" doesn't works? zuogang at huawei dot com
@ 2008-11-29 3:11 ` pinskia at gcc dot gnu dot org
2008-12-01 10:14 ` zuogang at huawei dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-11-29 3:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2008-11-29 03:10 -------
Works for me with the trunk on i386-darwin8.11:
[236:~] apinski% ~/local-gcc/bin/gcc t.c -fstack-protector-all
[236:~] apinski% ./a.out
?,a:-1,b2
*** stack smashing detected ***: terminated
Illegal instruction
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38274
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/38274] why the option "-fstack-protector-all" doesn't works?
2008-11-26 9:26 [Bug c/38274] New: why the option "-fstack-protector-all" doesn't works? zuogang at huawei dot com
2008-11-29 3:11 ` [Bug middle-end/38274] " pinskia at gcc dot gnu dot org
@ 2008-12-01 10:14 ` zuogang at huawei dot com
2008-12-24 1:48 ` pinskia at gcc dot gnu dot org
2008-12-24 2:55 ` howarth at nitro dot med dot uc dot edu
3 siblings, 0 replies; 7+ messages in thread
From: zuogang at huawei dot com @ 2008-12-01 10:14 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from zuogang at huawei dot com 2008-12-01 10:13 -------
(In reply to comment #1)
> Works for me with the trunk on i386-darwin8.11:
> [236:~] apinski% ~/local-gcc/bin/gcc t.c -fstack-protector-all
> [236:~] apinski% ./a.out
> ?,a:-1,b2
> *** stack smashing detected ***: terminated
> Illegal instruction
what 's the version of the gcc src code you tried?
can you try the gcc version 4.1.2
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38274
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/38274] why the option "-fstack-protector-all" doesn't works?
2008-11-26 9:26 [Bug c/38274] New: why the option "-fstack-protector-all" doesn't works? zuogang at huawei dot com
2008-11-29 3:11 ` [Bug middle-end/38274] " pinskia at gcc dot gnu dot org
2008-12-01 10:14 ` zuogang at huawei dot com
@ 2008-12-24 1:48 ` pinskia at gcc dot gnu dot org
2008-12-24 2:55 ` howarth at nitro dot med dot uc dot edu
3 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-12-24 1:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2008-12-24 01:47 -------
(In reply to comment #2)
> what 's the version of the gcc src code you tried?
Trunk meaning 4.4.0.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38274
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/38274] why the option "-fstack-protector-all" doesn't works?
2008-11-26 9:26 [Bug c/38274] New: why the option "-fstack-protector-all" doesn't works? zuogang at huawei dot com
` (2 preceding siblings ...)
2008-12-24 1:48 ` pinskia at gcc dot gnu dot org
@ 2008-12-24 2:55 ` howarth at nitro dot med dot uc dot edu
3 siblings, 0 replies; 7+ messages in thread
From: howarth at nitro dot med dot uc dot edu @ 2008-12-24 2:55 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from howarth at nitro dot med dot uc dot edu 2008-12-24 02:53 -------
Zougang,
Considering they just closed the gcc 4.2 branch, the earliest one worth
testing would be gcc 4.3.2.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38274
^ permalink raw reply [flat|nested] 7+ messages in thread
[parent not found: <bug-38274-4@http.gcc.gnu.org/bugzilla/>]
end of thread, other threads:[~2023-03-21 0:05 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-11-26 9:26 [Bug c/38274] New: why the option "-fstack-protector-all" doesn't works? zuogang at huawei dot com
2008-11-29 3:11 ` [Bug middle-end/38274] " pinskia at gcc dot gnu dot org
2008-12-01 10:14 ` zuogang at huawei dot com
2008-12-24 1:48 ` pinskia at gcc dot gnu dot org
2008-12-24 2:55 ` howarth at nitro dot med dot uc dot edu
[not found] <bug-38274-4@http.gcc.gnu.org/bugzilla/>
2023-03-21 0:03 ` pinskia at gcc dot gnu.org
2023-03-21 0:05 ` pinskia at gcc dot gnu.org
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