https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94294
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |tnfchris at gcc dot gnu.org
--- Comment #5 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #4)
> I don't believe there is a "new/delete" issue.
I wonder.. , looking at
#include <cstdint>
#include <cstdlib>
#include <vector>
struct param {
uint32_t k;
std::vector<uint8_t> src;
std::vector<uint8_t> ref0;
};
size_t foo() {
param test[] = {
{48, {255, 0, 0, 0, 0, 0}
}};
return sizeof(test);
}
I had expected the answer to simply be
mov w0, #56
ret
since the new and delete can be elided.
...but GCC generates some pretty bad code here...
https://godbolt.org/z/EPoYYohPa
In this case nothing of the structure is used at all yet we keep all the
construction code.
