On Wed, Mar 16, 2011 at 11:11:07AM +0100, Andreas Schwab wrote:
> Jakub Jelinek <ja...@redhat.com> writes:
>
> > + {
> > + int nargs = list_length (TYPE_ARG_TYPES (type));
> > + link = CALL_INSN_FUNCTION_USAGE (insn);
>
> ../../gcc/var-tracking.c: In function 'prepare_call_arguments':
> ../../gcc/var-tracking.c:5623:12: error: unused variable 'nargs'
> [-Werror=unused-variable]
You didn't say which target it is. Anyway, guess on your target
INIT_CUMULATIVE_ARGS macro ignores the last argument.
Will commit this as obvious (using list_length directly in
INIT_CUMULATIVE_ARGS isn't a good choice, because some targets might
evaluate it more than once):
2011-03-16 Jakub Jelinek <ja...@redhat.com>
* var-tracking.c (prepare_call_arguments): Add ATTRIBUTE_UNUSED
to nargs.
--- gcc/var-tracking.c.jj 2011-03-16 09:36:12.000000000 +0100
+++ gcc/var-tracking.c 2011-03-16 11:16:04.074671156 +0100
@@ -5620,7 +5620,7 @@ prepare_call_arguments (basic_block bb,
type = NULL;
else
{
- int nargs = list_length (TYPE_ARG_TYPES (type));
+ int nargs ATTRIBUTE_UNUSED = list_length (TYPE_ARG_TYPES (type));
link = CALL_INSN_FUNCTION_USAGE (insn);
#ifndef PCC_STATIC_STRUCT_RETURN
if (aggregate_value_p (TREE_TYPE (type), type)
Jakub
