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re PR c++/23840 (Bogus "invalid lvalue in unary '&'" diagnostic and ICE with va_arg) 

PR c++/23840
	* tree.c (lvalue_p1): A VA_ARG_EXPR with class type is an lvalue,
	when class rvalues are lvalues.

	PR c++/23840
	* g++.dg/expr/stdarg1.C: New test.

From-SVN: r104877
This commit is contained in:
Mark Mitchell 2005-10-02 21:28:50 +00:00 committed by Mark Mitchell
parent b19bb8b044
commit c0ad5a3173
4 changed files with 29 additions and 1 deletions
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6
gcc/cp/ChangeLog
View File

@ -1,3 +1,9 @@
2005-10-02 Mark Mitchell <mark@codesourcery.com>
PR c++/23840
* tree.c (lvalue_p1): A VA_ARG_EXPR with class type is an lvalue,
when class rvalues are lvalues.
2005-09-28 Mark Mitchell <mark@codesourcery.com>
PR c++/16782

6
gcc/cp/tree.c
View File

@ -158,8 +158,12 @@ lvalue_p_1 (tree ref,
case TARGET_EXPR:
return treat_class_rvalues_as_lvalues ? clk_class : clk_none;
case CALL_EXPR:
case VA_ARG_EXPR:
return (treat_class_rvalues_as_lvalues
&& CLASS_TYPE_P (TREE_TYPE (ref))
? clk_class : clk_none);
case CALL_EXPR:
/* Any class-valued call would be wrapped in a TARGET_EXPR. */
return clk_none;

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2005-10-02 Mark Mitchell <mark@codesourcery.com>
PR c++/23840
* g++.dg/expr/stdarg1.C: New test.
2005-10-02 Diego Novillo <dnovillo@redhat.com>
PR 24142

13
gcc/testsuite/g++.dg/expr/stdarg1.C Normal file
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@ -0,0 +1,13 @@
// PR c++/23840
#include <stdarg.h>
struct S
{
int f(int);
};
void f(int i, ...)
{
va_list ap;
va_start (ap, i);
va_arg (ap, S).f(0);
}