------- Comment #4 from rguenth at gcc dot gnu dot org 2005-10-19 10:06 ------- Like so:
Index: cp/call.c =================================================================== RCS file: /cvs/gcc/gcc/gcc/cp/call.c,v retrieving revision 1.560 diff -c -3 -p -r1.560 call.c *** cp/call.c 18 Oct 2005 05:56:04 -0000 1.560 --- cp/call.c 19 Oct 2005 10:02:58 -0000 *************** build_conditional_expr (tree arg1, tree *** 3226,3231 **** --- 3226,3233 ---- arg3 = force_rvalue (arg3); arg3_type = TREE_TYPE (arg3); result_type = arg3_type; + arg2 = build_compound_expr (arg2, build_int_cst (result_type, 0)); + arg2_type = result_type; } else if (TREE_CODE (arg2) != THROW_EXPR && TREE_CODE (arg3) == THROW_EXPR) *************** build_conditional_expr (tree arg1, tree *** 3234,3239 **** --- 3236,3243 ---- arg2 = force_rvalue (arg2); arg2_type = TREE_TYPE (arg2); result_type = arg2_type; + arg3 = build_compound_expr (arg3, build_int_cst (result_type, 0)); + arg3_type = result_type; } else if (VOID_TYPE_P (arg2_type) && VOID_TYPE_P (arg3_type)) result_type = void_type_node; s/build_int_cst/create_default_constructed_temporary_target_expr/ whatever that will be. At least we don't ICE even for struct Foo { bool operator!=(int) { return true; } bool operator!() { return false; }}; void foo(void) { int value=1; !(value?Foo():throw); } but we create funny integer constants with type Foo, which is bad. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24439