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re PR c/22013 (ICE in gimple_add_tmp_var, at gimplify.c:535)

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PR c/22013
	PR c/22098
	* langhooks.h (struct lang_hooks): Add expr_to_decl.
	* langhooks.c (lhd_expr_to_decl): New.
	* langhooks-def.h (lhd_expr_to_decl, LANG_HOOKS_EXPR_TO_DECL):
	New.
	(LANG_HOOKS_INITIALIZER): Update.
	* tree.c (recompute_tree_invarant_for_addr_expr): Call
	expr_to_decl langhook.
	* c-tree.h (c_expr_to_decl): Declare.
	* c-typeck.c (c_expr_to_decl): New.
	(build_unary_op): Do not handle ADDR_EXPR of COMPOUND_LITERAL_EXPR
	specially.
	* c-objc-common.h (LANG_HOOKS_EXPR_TO_DECL): Define.

testsuite:
	* gcc.c-torture/compile/pr22013-1.c,
	gcc.c-torture/execute/pr22098-1.c,
	gcc.c-torture/execute/pr22098-2.c,
	gcc.c-torture/execute/pr22098-3.c: New tests.

From-SVN: r101630
This commit is contained in:
Joseph Myers 2005-07-05 18:50:24 +01:00 committed by Joseph Myers
parent 692a7aa3a5
commit 73f397d429
13 changed files with 123 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
gcc/ChangeLog
View File

@ -1,3 +1,20 @@
2005-07-05 Joseph S. Myers <joseph@codesourcery.com>
PR c/22013
PR c/22098
* langhooks.h (struct lang_hooks): Add expr_to_decl.
* langhooks.c (lhd_expr_to_decl): New.
* langhooks-def.h (lhd_expr_to_decl, LANG_HOOKS_EXPR_TO_DECL):
New.
(LANG_HOOKS_INITIALIZER): Update.
* tree.c (recompute_tree_invarant_for_addr_expr): Call
expr_to_decl langhook.
* c-tree.h (c_expr_to_decl): Declare.
* c-typeck.c (c_expr_to_decl): New.
(build_unary_op): Do not handle ADDR_EXPR of COMPOUND_LITERAL_EXPR
specially.
* c-objc-common.h (LANG_HOOKS_EXPR_TO_DECL): Define.
2005-07-05 Joseph S. Myers <joseph@codesourcery.com>
PR c/22308

2
gcc/c-objc-common.h
View File

@ -117,6 +117,8 @@ extern void c_initialize_diagnostics (diagnostic_context *);
#define LANG_HOOKS_REGISTER_BUILTIN_TYPE c_register_builtin_type
#undef LANG_HOOKS_TO_TARGET_CHARSET
#define LANG_HOOKS_TO_TARGET_CHARSET c_common_to_target_charset
#undef LANG_HOOKS_EXPR_TO_DECL
#define LANG_HOOKS_EXPR_TO_DECL c_expr_to_decl
/* The C front end's scoping structure is very different from
that expected by the language-independent code; it is best

1
gcc/c-tree.h
View File

@ -573,6 +573,7 @@ extern tree c_finish_goto_label (tree);
extern tree c_finish_goto_ptr (tree);
extern void c_begin_vm_scope (unsigned int);
extern void c_end_vm_scope (unsigned int);
extern tree c_expr_to_decl (tree, bool *, bool *, bool *);
/* Set to 0 at beginning of a function definition, set to 1 if
a return statement that specifies a return value is seen. */

24
gcc/c-typeck.c
View File

@ -2790,9 +2790,6 @@ build_unary_op (enum tree_code code, tree xarg, int flag)
val = build1 (ADDR_EXPR, argtype, arg);
if (TREE_CODE (arg) == COMPOUND_LITERAL_EXPR)
TREE_INVARIANT (val) = TREE_CONSTANT (val) = 1;
return val;
default:
@ -8142,3 +8139,24 @@ c_objc_common_truthvalue_conversion (tree expr)
leaving those to give errors later? */
return c_common_truthvalue_conversion (expr);
}
/* Convert EXPR to a contained DECL, updating *TC, *TI and *SE as
required. */
tree
c_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED,
bool *ti ATTRIBUTE_UNUSED, bool *se)
{
if (TREE_CODE (expr) == COMPOUND_LITERAL_EXPR)
{
tree decl = COMPOUND_LITERAL_EXPR_DECL (expr);
/* Executing a compound literal inside a function reinitializes
it. */
if (!TREE_STATIC (decl))
*se = true;
return decl;
}
else
return expr;
}

3
gcc/langhooks-def.h
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@ -69,6 +69,7 @@ extern const char *lhd_comdat_group (tree);
extern tree lhd_expr_size (tree);
extern size_t lhd_tree_size (enum tree_code);
extern HOST_WIDE_INT lhd_to_target_charset (HOST_WIDE_INT);
extern tree lhd_expr_to_decl (tree, bool *, bool *, bool *);
/* Declarations of default tree inlining hooks. */
extern tree lhd_tree_inlining_walk_subtrees (tree *, int *, walk_tree_fn,
@ -123,6 +124,7 @@ extern int lhd_gimplify_expr (tree *, tree *, tree *);
#define LANG_HOOKS_TREE_SIZE lhd_tree_size
#define LANG_HOOKS_TYPES_COMPATIBLE_P lhd_types_compatible_p
#define LANG_HOOKS_BUILTIN_FUNCTION builtin_function
#define LANG_HOOKS_EXPR_TO_DECL lhd_expr_to_decl
#define LANG_HOOKS_TO_TARGET_CHARSET lhd_to_target_charset
#define LANG_HOOKS_FUNCTION_INIT lhd_do_nothing_f
@ -299,6 +301,7 @@ extern tree lhd_make_node (enum tree_code);
LANG_HOOKS_GIMPLIFY_EXPR, \
LANG_HOOKS_FOLD_OBJ_TYPE_REF, \
LANG_HOOKS_BUILTIN_FUNCTION, \
LANG_HOOKS_EXPR_TO_DECL, \
}
#endif /* GCC_LANG_HOOKS_DEF_H */

7
gcc/langhooks.c
View File

@ -543,3 +543,10 @@ lhd_to_target_charset (HOST_WIDE_INT c)
{
return c;
}
tree
lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED,
bool *ti ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED)
{
return expr;
}

6
gcc/langhooks.h
View File

@ -412,6 +412,12 @@ struct lang_hooks
enum built_in_class bt_class,
const char *library_name, tree attrs);
/* Called by recompute_tree_invarant_for_addr_expr to go from EXPR
to a contained expression or DECL, possibly updating *TC, *TI or
*SE if in the process TREE_CONSTANT, TREE_INVARIANT or
TREE_SIDE_EFFECTS need updating. */
tree (*expr_to_decl) (tree expr, bool *tc, bool *ti, bool *se);
/* Whenever you add entries here, make sure you adjust langhooks-def.h
and langhooks.c accordingly. */
};

9
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,12 @@
2005-07-05 Joseph S. Myers <joseph@codesourcery.com>
PR c/22013
PR c/22098
* gcc.c-torture/compile/pr22013-1.c,
gcc.c-torture/execute/pr22098-1.c,
gcc.c-torture/execute/pr22098-2.c,
gcc.c-torture/execute/pr22098-3.c: New tests.
2005-07-05 Joseph S. Myers <joseph@codesourcery.com>
PR c/22308

11
gcc/testsuite/gcc.c-torture/compile/pr22013-1.c Normal file
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@ -0,0 +1,11 @@
typedef unsigned short W;
typedef const W *P;
extern void g(P);
void
f ()
{
const P s = (const W []){ 'R' };
g (s);
}

14
gcc/testsuite/gcc.c-torture/execute/pr22098-1.c Normal file
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@ -0,0 +1,14 @@
extern void abort (void);
extern void exit (int);
typedef __SIZE_TYPE__ size_t;
int
main (void)
{
int a = 0;
int *p;
size_t b;
b = (size_t)(p = &(int []){0, 1, 2}[++a]);
if (a != 1 || *p != 1 || *(int *)b != 1)
abort ();
exit (0);
}

14
gcc/testsuite/gcc.c-torture/execute/pr22098-2.c Normal file
View File

@ -0,0 +1,14 @@
extern void abort (void);
extern void exit (int);
typedef __SIZE_TYPE__ size_t;
int
main (void)
{
int a = 0;
int *p;
size_t b;
b = (size_t)(p = &(int []){0, 1, 2}[1]);
if (*p != 1 || *(int *)b != 1)
abort ();
exit (0);
}

16
gcc/testsuite/gcc.c-torture/execute/pr22098-3.c Normal file
View File

@ -0,0 +1,16 @@
extern void abort (void);
extern void exit (int);
typedef __SIZE_TYPE__ size_t;
int n = 0;
int f (void) { return ++n; }
int
main (void)
{
int a = 0;
int *p;
size_t b;
b = (size_t)(p = &(int []){0, f(), 2}[1]);
if (*p != 1 || *(int *)b != 1 || n != 1)
abort ();
exit (0);
}

2
gcc/tree.c
View File

@ -2466,6 +2466,8 @@ do { tree _node = (NODE); \
UPDATE_TITCSE (TREE_OPERAND (node, 2));
}
node = lang_hooks.expr_to_decl (node, &tc, &ti, &se);
/* Now see what's inside. If it's an INDIRECT_REF, copy our properties from
the address, since &(*a)->b is a form of addition. If it's a decl, it's
invariant and constant if the decl is static. It's also invariant if it's