[Bug c/53580] Internal Segmentation fault in nested "omp parallel", "omp parallel for" and "omp parallel for reduction" Directives

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53580

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-06-07 
06:37:00 UTC ---
Author: jakub
Date: Thu Jun  7 06:36:55 2012
New Revision: 188298

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188298
Log:
    PR middle-end/53580
    * omp-low.c (scan_omp): Change first argument to
    gimple_seq *, call walk_gimple_seq_mod instead of
    walk_gimple_seq.
    (scan_sharing_clauses, scan_omp_parallel, scan_omp_task,
    scan_omp_for, scan_omp_sections, scan_omp_single,
    execute_lower_omp): Adjust callers.
    (scan_omp_1_stmt): Likewise.  If check_omp_nesting_restrictions
    returns false, replace stmt with GIMPLE_NOP.
    (check_omp_nesting_restrictions): Instead of issuing warnings,
    issue errors and return false if any errors were reported.

    * gcc.dg/gomp/nesting-1.c: Expect errors rather than warnings.
    * gcc.dg/gomp/critical-4.c: Likewise.
    * gfortran.dg/gomp/appendix-a/a.35.1.f90: Likewise.
    * gfortran.dg/gomp/appendix-a/a.35.3.f90: Likewise.
    * gfortran.dg/gomp/appendix-a/a.35.4.f90: Likewise.
    * gfortran.dg/gomp/appendix-a/a.35.6.f90: Likewise.
    * c-c++-common/gomp/pr53580.c: New test.

    * testsuite/libgomp.c/pr26943-2.c: Remove #pragma omp barrier,
    use GOMP_barrier () call instead.
    * testsuite/libgomp.c/pr26943-3.c: Likewise.
    * testsuite/libgomp.c/pr26943-4.c: Likewise.
    * testsuite/libgomp.fortran/vla4.f90: Remove !$omp barrier,
    call GOMP_barrier instead.
    * testsuite/libgomp.fortran/vla5.f90: Likewise.

Added:
    trunk/gcc/testsuite/c-c++-common/gomp/pr53580.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/omp-low.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/gomp/critical-4.c
    trunk/gcc/testsuite/gcc.dg/gomp/nesting-1.c
    trunk/gcc/testsuite/gfortran.dg/gomp/appendix-a/a.35.1.f90
    trunk/gcc/testsuite/gfortran.dg/gomp/appendix-a/a.35.3.f90
    trunk/gcc/testsuite/gfortran.dg/gomp/appendix-a/a.35.4.f90
    trunk/gcc/testsuite/gfortran.dg/gomp/appendix-a/a.35.6.f90
    trunk/libgomp/ChangeLog
    trunk/libgomp/testsuite/libgomp.c/pr26943-2.c
    trunk/libgomp/testsuite/libgomp.c/pr26943-3.c
    trunk/libgomp/testsuite/libgomp.c/pr26943-4.c
    trunk/libgomp/testsuite/libgomp.fortran/vla4.f90
    trunk/libgomp/testsuite/libgomp.fortran/vla5.f90