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re PR middle-end/37418 (error: type mismatch in address expression, verify_gimple failed)

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2008-10-16  Joseph Myers  <joseph@codesourcery.com>
        Richard Guenther  <rguenther@suse.de>

	PR middle-end/37418
	* tree-ssa.c (useless_type_conversion_p_1): Do not treat
	volatile qualified functions or methods as relevant.

	* gcc.c-torture/compile/pr37418-1.c,
	gcc.c-torture/compile/pr37418-2.c,
	gcc.c-torture/compile/pr37418-3.c,
	gcc.c-torture/compile/pr37418-4.c: New tests.

From-SVN: r141165
This commit is contained in:
Richard Biener 2008-10-16 08:19:49 +00:00
parent 5b429886c5
commit bd4a51ab34
7 changed files with 46 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2008-10-16 Richard Guenther <rguenther@suse.de>
PR middle-end/37418
* tree-ssa.c (useless_type_conversion_p_1): Do not treat
volatile qualified functions or methods as relevant.
2008-10-16 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/37525

8
gcc/testsuite/ChangeLog
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@ -1,3 +1,11 @@
2008-10-16 Joseph Myers <joseph@codesourcery.com>
PR middle-end/37418
* gcc.c-torture/compile/pr37418-1.c,
gcc.c-torture/compile/pr37418-2.c,
gcc.c-torture/compile/pr37418-3.c,
gcc.c-torture/compile/pr37418-4.c: New tests.
2008-10-15 Thomas Koenig <tkoenig@gcc.gnu.org>
PR libfortran/34670

6
gcc/testsuite/gcc.c-torture/compile/pr37418-1.c Normal file
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@ -0,0 +1,6 @@
typedef void ft(int);
void f(int args)__attribute__((noreturn));
void f2(ft *p __attribute__((noreturn)))
{
p = f;
}

6
gcc/testsuite/gcc.c-torture/compile/pr37418-2.c Normal file
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@ -0,0 +1,6 @@
typedef void ft(int);
volatile ft f;
void f2(ft *p __attribute__((noreturn)))
{
p = f;
}

6
gcc/testsuite/gcc.c-torture/compile/pr37418-3.c Normal file
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@ -0,0 +1,6 @@
typedef void ft(int);
void f(int args)__attribute__((const));
void f2(ft *p __attribute__((const)))
{
p = f;
}

6
gcc/testsuite/gcc.c-torture/compile/pr37418-4.c Normal file
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@ -0,0 +1,6 @@
typedef void ft(int);
const ft f;
void f2(ft *p __attribute__((const)))
{
p = f;
}

11
gcc/tree-ssa.c
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@ -1125,9 +1125,14 @@ useless_type_conversion_p_1 (tree outer_type, tree inner_type)
{
/* Don't lose casts between pointers to volatile and non-volatile
qualified types. Doing so would result in changing the semantics
of later accesses. */
if ((TYPE_VOLATILE (TREE_TYPE (outer_type))
!= TYPE_VOLATILE (TREE_TYPE (inner_type)))
of later accesses. For function types the volatile qualifier
is used to indicate noreturn functions. */
if (TREE_CODE (TREE_TYPE (outer_type)) != FUNCTION_TYPE
&& TREE_CODE (TREE_TYPE (outer_type)) != METHOD_TYPE
&& TREE_CODE (TREE_TYPE (inner_type)) != FUNCTION_TYPE
&& TREE_CODE (TREE_TYPE (inner_type)) != METHOD_TYPE
&& (TYPE_VOLATILE (TREE_TYPE (outer_type))
!= TYPE_VOLATILE (TREE_TYPE (inner_type)))
&& TYPE_VOLATILE (TREE_TYPE (outer_type)))
return false;