* [PATCH] Fix PR34127
@ 2007-11-18 18:56 Richard Guenther
0 siblings, 0 replies; only message in thread
From: Richard Guenther @ 2007-11-18 18:56 UTC (permalink / raw)
To: gcc-patches
This fixes PR34127, another fallout from the forwprop change. This
will actually be the last try before I consider reverting to the original
state ;)
Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk.
Richard.
2007-11-18 Richard Guenther <rguenther@suse.de>
PR tree-optimization/34127
* tree-ssa-forwprop.c (tree_ssa_forward_propagate_single_use_vars):
Make code match up the comments, require compatibility of the
pointed-to types.
* gcc.c-torture/compile/pr34127.c: New testcase.
Index: tree-ssa-forwprop.c
===================================================================
*** tree-ssa-forwprop.c (revision 130257)
--- tree-ssa-forwprop.c (working copy)
*************** tree_ssa_forward_propagate_single_use_va
*** 959,966 ****
|| TREE_CODE (rhs) == CONVERT_EXPR)
&& TREE_CODE (TREE_OPERAND (rhs, 0)) == ADDR_EXPR
&& POINTER_TYPE_P (TREE_TYPE (rhs))
! && useless_type_conversion_p (TREE_TYPE (TREE_TYPE (TREE_OPERAND (rhs, 0))),
! TREE_TYPE (TREE_TYPE (rhs)))))
{
if (forward_propagate_addr_expr (lhs, rhs))
{
--- 959,966 ----
|| TREE_CODE (rhs) == CONVERT_EXPR)
&& TREE_CODE (TREE_OPERAND (rhs, 0)) == ADDR_EXPR
&& POINTER_TYPE_P (TREE_TYPE (rhs))
! && types_compatible_p (TREE_TYPE (TREE_TYPE (TREE_OPERAND (rhs, 0))),
! TREE_TYPE (TREE_TYPE (rhs)))))
{
if (forward_propagate_addr_expr (lhs, rhs))
{
Index: testsuite/gcc.c-torture/compile/pr34127.c
===================================================================
*** testsuite/gcc.c-torture/compile/pr34127.c (revision 0)
--- testsuite/gcc.c-torture/compile/pr34127.c (revision 0)
***************
*** 0 ****
--- 1,9 ----
+ static void
+ whichtable(char **pfmt)
+ {
+ --*pfmt;
+ }
+ void prepare_s(const char *fmt)
+ {
+ whichtable((char **)&fmt);
+ }
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2007-11-18 18:56 [PATCH] Fix PR34127 Richard Guenther
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