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[Patch, fortran]: prevent clobbered by 'longjmp' or 'vfork
- From: howarth at bromo dot msbb dot uc dot edu (Jack Howarth)
- To: gcc-patches at gcc dot gnu dot org
- Cc: fortran at gcc dot gnu dot org
- Date: Sun, 1 Oct 2006 19:51:35 -0400 (EDT)
- Subject: [Patch, fortran]: prevent clobbered by 'longjmp' or 'vfork
The attached patch eliminates a warning of...
../../../gcc-4.2-20060928/libgfortran/io/list_read.c: In function 'list_formatted_read_scalar':
../../../gcc-4.2-20060928/libgfortran/io/list_read.c:1460: warning: argument 'type' might be clobbered by 'longjmp' or 'vfork'
which occurs on Darwin/ppc, Linux/ppc and Linux/x86-64. The
fix has be confirmed as the correct approach by Andreas Jaeger.
I have bootstrap and regression tested this patch on
Darwin/PPC. Okay for trunk?
Jack
2006-10-01 Jack Howarth <howarth@bromo.med.uc.edu>
* io/list_read.c (list_formatted_read_scalar):
Make type volatile.
Index: io/list_read.c
===================================================================
--- io/list_read.c (revision 117347)
+++ io/list_read.c (working copy)
@@ -1457,7 +1457,7 @@ check_type (st_parameter_dt *dtp, bt typ
greater than one, we copy the data item multiple times. */
static void
-list_formatted_read_scalar (st_parameter_dt *dtp, bt type, void *p, int kind,
+list_formatted_read_scalar (st_parameter_dt *dtp, volatile bt type, void *p, int kind,
size_t size)
{
char c;