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* [Bug c++/102603] New: Compile-time evaluation of indirection via dangling pointer is not rejected
@ 2021-10-05 8:19 fchelnokov at gmail dot com
2021-10-05 14:15 ` [Bug c++/102603] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: fchelnokov at gmail dot com @ 2021-10-05 8:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102603
Bug ID: 102603
Summary: Compile-time evaluation of indirection via dangling
pointer is not rejected
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fchelnokov at gmail dot com
Target Milestone: ---
The program as follows is ill-formed:
```
constexpr bool g() {
int * p = nullptr;
{
int c = 0;
p = &c;
}
return *p == 0; //indirection via dangling pointer
};
int main() {
static_assert( g() );
}
```
but GCC erroneously accepts it, demo: https://gcc.godbolt.org/z/8xE7csGKo
The compiler must fail the program, see stackoverflow explanation:
https://stackoverflow.com/a/69446660/7325599
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/102603] Compile-time evaluation of indirection via dangling pointer is not rejected
2021-10-05 8:19 [Bug c++/102603] New: Compile-time evaluation of indirection via dangling pointer is not rejected fchelnokov at gmail dot com
@ 2021-10-05 14:15 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-10-05 14:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102603
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 70331.
*** This bug has been marked as a duplicate of bug 70331 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-10-05 8:19 [Bug c++/102603] New: Compile-time evaluation of indirection via dangling pointer is not rejected fchelnokov at gmail dot com
2021-10-05 14:15 ` [Bug c++/102603] " pinskia at gcc dot gnu.org
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