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re PR c++/37819 (ice for bitfield code)

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PR c++/37819
	* cp-gimplify.c (cp_genericize_r): Only fold_convert COND_EXPR
	arguments if they don't already have COND_EXPR's type.

	* g++.dg/expr/bitfield11.C: New test.

From-SVN: r141118
This commit is contained in:
Jakub Jelinek 2008-10-14 23:57:44 +02:00 committed by Jakub Jelinek
parent 5c0a2e3ac5
commit d767aebf70
4 changed files with 30 additions and 2 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2008-10-14 Jakub Jelinek <jakub@redhat.com>
PR c++/37819
* cp-gimplify.c (cp_genericize_r): Only fold_convert COND_EXPR
arguments if they don't already have COND_EXPR's type.
2008-10-14 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/37650

8
gcc/cp/cp-gimplify.c
View File

@ -815,14 +815,18 @@ cp_genericize_r (tree *stmt_p, int *walk_subtrees, void *data)
= (TREE_OPERAND (stmt, 2)
? is_bitfield_expr_with_lowered_type (TREE_OPERAND (stmt, 2))
: NULL_TREE);
if (type_left)
if (type_left
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 1))))
{
TREE_OPERAND (stmt, 1)
= fold_convert (type_left, TREE_OPERAND (stmt, 1));
gcc_assert (useless_type_conversion_p (TREE_TYPE (stmt),
type_left));
}
if (type_right)
if (type_right
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 2))))
{
TREE_OPERAND (stmt, 2)
= fold_convert (type_right, TREE_OPERAND (stmt, 2));

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2008-10-14 Jakub Jelinek <jakub@redhat.com>
PR c++/37819
* g++.dg/expr/bitfield11.C: New test.
2008-10-14 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/37650

13
gcc/testsuite/g++.dg/expr/bitfield11.C Normal file
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@ -0,0 +1,13 @@
// PR c++/37819
// { dg-do compile }
struct A
{
unsigned int a : 1;
};
bool
foo (A *x, A *y)
{
x->a = y ? y->a : true;
}