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* [Bug c++/97739] New: alignas() fails to compile with const expression like std::max or std::min
@ 2020-11-06 8:58 stanislav.pikulik at lge dot com
2020-11-06 9:19 ` [Bug c++/97739] " jakub at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: stanislav.pikulik at lge dot com @ 2020-11-06 8:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97739
Bug ID: 97739
Summary: alignas() fails to compile with const expression like
std::max or std::min
Product: gcc
Version: 8.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: stanislav.pikulik at lge dot com
Target Milestone: ---
#include <algorithm>
template <typename T>
constexpr T foo(T arg) { return arg; }
template <typename T>
constexpr auto bar(T arg1, T arg2) { return arg1>arg2 ? arg1 : arg2; }
int main()
{
alignas(foo(2)) char a1[3]; // ok
alignas(bar(1,2)) char a2[3]; // ok
const size_t b3 = std::max(1,2);
alignas(b3) char a3[3]; // ok
constexpr size_t b4 = std::max(1,2);
alignas(b4) char a4[3]; // ok
alignas(std::max(1,2)) char a5[3]; // error: requested alignment is not an
integer constant
return 0;
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/97739] alignas() fails to compile with const expression like std::max or std::min
2020-11-06 8:58 [Bug c++/97739] New: alignas() fails to compile with const expression like std::max or std::min stanislav.pikulik at lge dot com
@ 2020-11-06 9:19 ` jakub at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: jakub at gcc dot gnu.org @ 2020-11-06 9:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97739
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Dup of an already fixed bug.
*** This bug has been marked as a duplicate of bug 90736 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-11-06 8:58 [Bug c++/97739] New: alignas() fails to compile with const expression like std::max or std::min stanislav.pikulik at lge dot com
2020-11-06 9:19 ` [Bug c++/97739] " jakub at gcc dot gnu.org
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