https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61342
Bug ID: 61342 Summary: Segfault when using default clause and VLA in OpenMP task Product: gcc Version: 4.10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: philippe.virouleau at imag dot fr Created attachment 32871 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32871&action=edit produced output I got a segmentation fault from gcc when compiling a code using variable length array inside an open mp task, with "default(none)" specified. The minimal example that triggers the segfault with my gcc is the following : int main() { int x = 2; int y = 2; double f_[2][2]; double (*f)[x][y] = (double (*)[x][y])f_; #pragma omp parallel #pragma omp master { for (int i = 0; i < x; i++) for (int j = 0; j < y; j++) #pragma omp task default(none) shared(f) firstprivate(i, j) { (*f)[i][j] = 1; } } } Attached is the is the produced stacktrace (with command line and gcc version), and my operating system is Debian (Linux daisy 3.14-1-amd64 #1 SMP Debian 3.14.4-1 (2014-05-13) x86_64 GNU/Linux). Note that removing the "default(none)" makes the code compile normally