[Bug fortran/41823] New: gcc/fortran/trans-openmp.c: possible null pointer dereference
dcb314 at hotmail dot com
gcc-bugzilla@gcc.gnu.org
Sun Oct 25 11:11:00 GMT 2009
I just had a look at the source code file
gcc/fortran/trans-openmp.c,
function gfc_trans_omp_do.
I notice the following code
gfc_omp_clauses *clauses = code->ext.omp_clauses;
gfc_code *outermost;
int i, collapse = clauses->collapse;
where the assumption is made that local variable "clauses" is non-NULL
and so local variable "collapse" can be assigned to ok.
Later code is
for (i = 0; i < collapse; i++)
{
int simple = 0;
int dovar_found = 0;
if (clauses)
where a test is made for local variable "clauses" to be NULL or not.
Suggest code rework to cope with clauses being NULL. Maybe the following
untested code would be enough
int i, collapse = (clauses ? clauses->collapse : 0);
--
Summary: gcc/fortran/trans-openmp.c: possible null pointer
dereference
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dcb314 at hotmail dot com
GCC host triplet: x86_64-suse-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41823
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