https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101544
Bug ID: 101544
Summary: [OpenMP] 'declare target' block around class –
unresolved _Znwm = "operator new(unsigned long)"
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: openmp, wrong-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: cltang at gcc dot gnu.org, jakub at gcc dot gnu.org
Target Milestone: ---
Created attachment 51184
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51184&action=edit
Testcase declare_target_base_class.cpp
>From https://github.com/SOLLVE/sollve_vv/pull/364
which is for https://github.com/SOLLVE/sollve_vv/issues/105
The code compiles with LLVM >= 12 but fails with LLVM < 12 according to the
sollve_vv issue.
The testcase – allegedly OpenMP 4.5 – fails to link with:
unresolved symbol _Znwm
collect2: error: ld returned 1 exit status
mkoffload: fatal error: x86_64-none-linux-gnu-accel-nvptx-none-gcc returned 1
exit status
where "_Znwm" = "operator new(unsigned long)"
The code has:
+#pragma omp declare target
+class S {
...
+#pragma omp target map(ptr)
+ ptr = new S();
...
+#pragma omp end declare target
