https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108422
--- Comment #4 from Tobias Burnus <burnus at gcc dot gnu.org> --- Created attachment 54491 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54491&action=edit Testcase - compile with 'g++ -fopenmp' + run (In reply to Tobias Burnus from comment #3) > --- a/gcc/gimplify.cc > +++ b/gcc/gimplify.cc > @@ -9643 +9643 @@ omp_tsort_mapping_groups_1 (omp_mapping_group ***outlist, > - if (innerp && *innerp != grp) > + if (innerp && *innerp != grp && (*innerp)->mark != PERMANENT) While COMPILING WORKS and the expected nested-target warning is printed, it FAILS at RUNTIME (on a system not configured for offloading) with a segfault. That's related to the warning: test.cc:20:13: warning: '__closure' is used uninitialized [-Wuninitialized] which appears at the location of the outer 'omp target (parallel)'. Note: without inner target construct (reverse offload), the program runs fine. (Independent of the one-line patch.)
