https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120682
Bug ID: 120682
Summary: declare mapper does not work with templates
Product: gcc
Version: 15.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: schulz.benjamin at googlemail dot com
CC: jakub at gcc dot gnu.org
Target Milestone: ---
OpenMP supports a declare mapper statement since version 5.
https://www.openmp.org/spec-html/5.2/openmpsu61.html
Lets test that with C++ templates in gcc and write:
#include "omp.h"
template <typename T>
struct myvec
{
size_t len;
T *data;
};
#pragma omp declare mapper(myvec<T> v) map(v, v.data[0:v.len])
int main()
{
return 0;
}
yields with compilation arguments
-fopenmp -foffload=nvptx-none -fno-stack-protector -std=c++23
to:
/home/benni/projects/openmptestnew/openmpoffloatest/main.cpp:17:21: Errpr:
expected »simd«, »reduction«, »target« or »variant« before »mapper«
17 | #pragma omp declare mapper(myvec< T > v) map(v, v.data[0:v.len])
| ^~~~~~
