https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118214
Bug ID: 118214
Summary: [15 regression] OpenTTD test failure with C++ large
initializer
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
Originally reported downstream in Gentoo at https://bugs.gentoo.org/946984 with
OpenTTD tests failing, e.g. "PartialPixelTest - One corner up slopes -
SLOPE_N".
```
#include <array>
#include <vector>
enum Slope {
SLOPE_N = 8U
};
static const unsigned int TILE_SIZE = 16U;
__attribute__((noipa))
bool CheckPartialPixelZ(Slope slope, std::array<int, TILE_SIZE * TILE_SIZE>
expected)
{
int actual[TILE_SIZE * TILE_SIZE] = {8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3,
2, 2, 1, 1, 0,
7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0,
7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0,
6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0,
6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0,
5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0,
5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0,
4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
4, 3};
for (unsigned int i = 0; i < expected.size(); i++) {
if (actual[i] != expected[i]) __builtin_trap();
}
return true;
}
int main() {
CheckPartialPixelZ(SLOPE_N, {
8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0,
7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0,
7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0,
6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0,
6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0,
5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0,
5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0,
4, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
4, 3, }
);
}
```
