https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90009
--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> --- Author: vries Date: Wed Jun 12 14:56:18 2019 New Revision: 272189 URL: https://gcc.gnu.org/viewcvs?rev=272189&root=gcc&view=rev Log: [nvptx] Assert fork has at most one join in nvptx_find_par With the test-case of PR90009 we run into a SIGSEGV in nvptx_neuter_pars, because par->join_insn and par->join_block are NULL. Detect this problem earlier, by adding an assert in nvptx_find_par that asserts that a fork cannot be paired with more than one join. Build and tested on x86_64 with nvptx accelerator enabled. 2019-06-12 Tom de Vries <tdevr...@suse.de> PR tree-optimization/90009 * config/nvptx/nvptx.c (nvptx_find_par): Assert fork has at most join. Modified: trunk/gcc/ChangeLog trunk/gcc/config/nvptx/nvptx.c