https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87075
Bug ID: 87075
Summary: ICE when compiling the test suite of GLM 0.9.9.0
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: guus at debian dot org
Target Milestone: ---
When compiling the test suite of GLM 0.9.9.0, a header-only OpenGL mathematics
library, a compiler error occurs with GCC 7 and later, but it seems earlier
versions work fine. The attached dump is from 8.2.0 when compiling the test
suite. A minimal program to reproduce it, with the GLM 0.9.9.0 headers
installed, is:
#include <glm/glm.hpp>
using namespace glm;
int main() {
mat2 a(0,1,2,3); // GCC from trunk already fails here
mat2 b = matrixCompMult(a, a);
mat2 c = mat2(0,1,2,3); // no ICE on 8.2.0 for: mat2 c(0,1,2,3);
}
The error message when compiling this example with 8.2.0:
<source>: In function 'int main()':
<source>:8:26: internal compiler error: in gimplify_expr, at gimplify.c:12385
mat2 c = mat2(0,1,2,3); // no ICE on 8.2.0 for: mat2 c(0,1,2,3);
^
The error message when compiling this example with trunk:
<source>: In function 'int main()':
<source>:6:19: in 'constexpr' expansion of 'a.glm::mat<2, 2, float,
(glm::qualifier)0>::mat<int, int, int, int>(0, 1, 2, 3)'
<source>:6:19: internal compiler error: tree check: expected constructor, have
void_cst in cxx_eval_store_expression, at cp/constexpr.c:3785
6 | mat2 a(0,1,2,3); // GCC from trunk already fails here
| ^
Let me know if I can provide more help.
