From 7c929c9c611546f0e77753e90b652f7607d06484 Mon Sep 17 00:00:00 2001 From: Tobias Burnus Date: Fri, 18 Oct 2019 12:04:31 +0000 Subject: Fortran] PR91586 Fix ICE on invalid code with CLASS gcc/fortran/ PR fortran/91586 * class.c (gfc_find_derived_vtab): Return NULL instead of deref'ing NULL pointer. gcc/testsuite/ PR fortran/91586 * gfortran.dg/class_71.f90: New. From-SVN: r277153 --- gcc/fortran/ChangeLog | 6 ++++++ gcc/fortran/class.c | 3 +++ 2 files changed, 9 insertions(+) (limited to 'gcc/fortran') diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog index 1dbc890..8a1beea 100644 --- a/gcc/fortran/ChangeLog +++ b/gcc/fortran/ChangeLog @@ -1,3 +1,9 @@ +2019-10-18 Tobias Burnus + + PR fortran/91586 + * class.c (gfc_find_derived_vtab): Return NULL + instead of deref'ing NULL pointer. + 2019-10-15 James Norris Tobias Burnus diff --git a/gcc/fortran/class.c b/gcc/fortran/class.c index 8a1f43f..9117121 100644 --- a/gcc/fortran/class.c +++ b/gcc/fortran/class.c @@ -2241,6 +2241,9 @@ gfc_find_derived_vtab (gfc_symbol *derived) if (!derived->attr.unlimited_polymorphic && derived->attr.is_class) derived = gfc_get_derived_super_type (derived); + if (!derived) + return NULL; + /* Find the gsymbol for the module of use associated derived types. */ if ((derived->attr.use_assoc || derived->attr.used_in_submodule) && !derived->attr.vtype && !derived->attr.is_class) -- cgit v1.1