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| author | Harald Anlauf <anlauf@gmx.de> | 2021-12-08 21:14:19 +0100 |
|---|---|---|
| committer | Harald Anlauf <anlauf@gmx.de> | 2021-12-08 21:14:19 +0100 |
| commit | b77968a70537429b4f548f90c369d26e6b6943cc (patch) | |
| tree | 938547f45e9696ae836530400216e73ce808e1a6 | |
| parent | 7add7f7bb3d35726a0c45322ffdbbab2bbf6a348 (diff) | |
| download | gcc-b77968a70537429b4f548f90c369d26e6b6943cc.zip gcc-b77968a70537429b4f548f90c369d26e6b6943cc.tar.gz gcc-b77968a70537429b4f548f90c369d26e6b6943cc.tar.bz2 | |
Fortran: avoid NULL pointer dereference on missing or bad dummy arguments
gcc/fortran/ChangeLog:
PR fortran/103609
* symbol.c (gfc_sym_get_dummy_args): Catch NULL pointer
dereference.
gcc/testsuite/ChangeLog:
PR fortran/103609
* gfortran.dg/pr103609.f90: New test.
| -rw-r--r-- | gcc/fortran/symbol.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gfortran.dg/pr103609.f90 | 15 |
2 files changed, 18 insertions, 0 deletions
diff --git a/gcc/fortran/symbol.c b/gcc/fortran/symbol.c index 179f602..ebd9984 100644 --- a/gcc/fortran/symbol.c +++ b/gcc/fortran/symbol.c @@ -5240,6 +5240,9 @@ gfc_sym_get_dummy_args (gfc_symbol *sym) { gfc_formal_arglist *dummies; + if (sym == NULL) + return NULL; + dummies = sym->formal; if (dummies == NULL && sym->ts.interface != NULL) dummies = sym->ts.interface->formal; diff --git a/gcc/testsuite/gfortran.dg/pr103609.f90 b/gcc/testsuite/gfortran.dg/pr103609.f90 new file mode 100644 index 0000000..57f6a3b --- /dev/null +++ b/gcc/testsuite/gfortran.dg/pr103609.f90 @@ -0,0 +1,15 @@ +! { dg-do compile } +! PR fortran/103609 - ICE in gfc_sym_get_dummy_args +! Contributed by G.Steinmetz + +program p + implicit none + integer :: i + do i = 1, 2 + call s + end do +contains + subroutine s + call sub(x) ! { dg-error "has no IMPLICIT type" } + end +end |