mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-08 09:41:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

re PR c++/23171 (ICE on pointer initialization with C99 initializer)

Browse Source 
PR c++/23171
	* varasm.c (initializer_constant_valid_p): An ADDR_EXPR of a
	CONSTRUCTOR is invalid.

	PR c++/23171
	* g++.dg/opt/init1.C: New test.

From-SVN: r109035
This commit is contained in:
Mark Mitchell 2005-12-24 08:51:05 +00:00 committed by Mark Mitchell
parent 097d5d18f0
commit 125f2a50c9
4 changed files with 33 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2005-12-24 Mark Mitchell <mark@codesourcery.com>
PR c++/23171
* varasm.c (initializer_constant_valid_p): An ADDR_EXPR of a
CONSTRUCTOR is invalid.
2005-12-23 Daniel Berlin <dberlin@dberlin.org>
* tree-pass.h (pass_eliminate_useless_stores): Remove.

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2005-12-24 Mark Mitchell <mark@codesourcery.com>
PR c++/23171
* g++.dg/opt/init1.C: New test.
2005-12-23 Mark Mitchell <mark@codesourcery.com>
PR c++/24671

4
gcc/testsuite/g++.dg/opt/init1.C Normal file
View File

@ -0,0 +1,4 @@
// PR c++/23171
// { dg-options "-O" }
int *p = (int*)(int[1]){0};

30
gcc/varasm.c
View File

@ -3477,18 +3477,24 @@ initializer_constant_valid_p (tree value, tree endtype)
case ADDR_EXPR:
case FDESC_EXPR:
value = staticp (TREE_OPERAND (value, 0));
/* "&(*a).f" is like unto pointer arithmetic. If "a" turns out to
be a constant, this is old-skool offsetof-like nonsense. */
if (value
&& TREE_CODE (value) == INDIRECT_REF
&& TREE_CONSTANT (TREE_OPERAND (value, 0)))
return null_pointer_node;
/* Taking the address of a nested function involves a trampoline. */
if (value
&& TREE_CODE (value) == FUNCTION_DECL
&& ((decl_function_context (value) && !DECL_NO_STATIC_CHAIN (value))
|| DECL_DLLIMPORT_P (value)))
return NULL_TREE;
if (value)
{
/* "&(*a).f" is like unto pointer arithmetic. If "a" turns out to
be a constant, this is old-skool offsetof-like nonsense. */
if (TREE_CODE (value) == INDIRECT_REF
&& TREE_CONSTANT (TREE_OPERAND (value, 0)))
return null_pointer_node;
/* Taking the address of a nested function involves a trampoline. */
if (TREE_CODE (value) == FUNCTION_DECL
&& ((decl_function_context (value)
&& !DECL_NO_STATIC_CHAIN (value))
|| DECL_DLLIMPORT_P (value)))
return NULL_TREE;
/* "&{...}" requires a temporary to hold the constructed
object. */
if (TREE_CODE (value) == CONSTRUCTOR)
return NULL_TREE;
}
return value;
case VIEW_CONVERT_EXPR: