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* [Bug middle-end/92023] [9/10/11/12 Regression] Miscompilation when inlining operator delete[]
[not found] <bug-92023-4@http.gcc.gnu.org/bugzilla/>
@ 2021-11-12 8:37 ` pinskia at gcc dot gnu.org
2021-11-12 9:09 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-11-12 8:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92023
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |middle-end
Known to fail| |11.2.0, 7.1.0
Summary|Miscompilation when |[9/10/11/12 Regression]
|inlining operator delete[] |Miscompilation when
| |inlining operator delete[]
Known to work| |6.4.0
Target Milestone|--- |9.5
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
here is a runtime testcase:
#include <cstddef>
#include <cstdio>
#include <new>
int t = 0;
void use(int* p) __attribute__((noipa,noinline,noclone));
void use(int*){}
void report(int) __attribute__((noipa,noinline,noclone));
void report(int a)
{printf("%d\n",a);t++;}
const int N = 5;
const size_t S = 512;
char objs[N][S];
bool taken[N] = {};
void* operator new[](size_t size) {
if (size <= S) {
for (int i = 0; i < N; i++) {
if (!taken[i]) {
report(2000 + i);
taken[i] = true;
return &objs[i];
}
}
}
throw std::bad_alloc();
}
void operator delete[](void* ptr) noexcept {
for (int i = 0; i < N; i++) {
if (ptr == &objs[i]) {
report(-2000 - i);
taken[i] = false;
}
}
}
int n = 10;
void test() __attribute__((noinline));
void test() {
int* a = new int[n];
int* b = new int[n];
use(a);
use(b);
delete[] b;
delete[] a;
}
int main(void)
{
test();
if (t != 4)
__builtin_abort();
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/92023] [9/10/11/12 Regression] Miscompilation when inlining operator delete[]
[not found] <bug-92023-4@http.gcc.gnu.org/bugzilla/>
2021-11-12 8:37 ` [Bug middle-end/92023] [9/10/11/12 Regression] Miscompilation when inlining operator delete[] pinskia at gcc dot gnu.org
@ 2021-11-12 9:09 ` rguenth at gcc dot gnu.org
2022-05-27 9:41 ` [Bug middle-end/92023] [10/11/12/13 " rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-11-12 9:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92023
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/92023] [10/11/12/13 Regression] Miscompilation when inlining operator delete[]
[not found] <bug-92023-4@http.gcc.gnu.org/bugzilla/>
2021-11-12 8:37 ` [Bug middle-end/92023] [9/10/11/12 Regression] Miscompilation when inlining operator delete[] pinskia at gcc dot gnu.org
2021-11-12 9:09 ` rguenth at gcc dot gnu.org
@ 2022-05-27 9:41 ` rguenth at gcc dot gnu.org
2022-06-28 10:38 ` jakub at gcc dot gnu.org
2023-07-07 10:36 ` [Bug middle-end/92023] [11/12/13/14 " rguenth at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 9:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92023
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.5 |10.4
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/92023] [10/11/12/13 Regression] Miscompilation when inlining operator delete[]
[not found] <bug-92023-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2022-05-27 9:41 ` [Bug middle-end/92023] [10/11/12/13 " rguenth at gcc dot gnu.org
@ 2022-06-28 10:38 ` jakub at gcc dot gnu.org
2023-07-07 10:36 ` [Bug middle-end/92023] [11/12/13/14 " rguenth at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-06-28 10:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92023
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.4 |10.5
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/92023] [11/12/13/14 Regression] Miscompilation when inlining operator delete[]
[not found] <bug-92023-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2022-06-28 10:38 ` jakub at gcc dot gnu.org
@ 2023-07-07 10:36 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-07 10:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92023
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.5 |11.5
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-07-07 10:36 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-92023-4@http.gcc.gnu.org/bugzilla/>
2021-11-12 8:37 ` [Bug middle-end/92023] [9/10/11/12 Regression] Miscompilation when inlining operator delete[] pinskia at gcc dot gnu.org
2021-11-12 9:09 ` rguenth at gcc dot gnu.org
2022-05-27 9:41 ` [Bug middle-end/92023] [10/11/12/13 " rguenth at gcc dot gnu.org
2022-06-28 10:38 ` jakub at gcc dot gnu.org
2023-07-07 10:36 ` [Bug middle-end/92023] [11/12/13/14 " rguenth at gcc dot gnu.org
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