https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80136
--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Jakub, thanks for the confirmation that force_gimple_operand is unnecessary.
Christophe, thanks for testing. Thus I am now regstrapping:
Index: gcc/testsuite/gcc.dg/torture/pr79908.c
===================================================================
--- gcc/testsuite/gcc.dg/torture/pr79908.c (revision 246334)
+++ gcc/testsuite/gcc.dg/torture/pr79908.c (working copy)
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+
+/* Used to fail in the stdarg pass before fix for PR79908. */
+
+typedef __builtin_va_list __gnuc_va_list;
+typedef __gnuc_va_list va_list;
+
+void testva (int n, ...)
+{
+ va_list ap;
+ _Complex int i = __builtin_va_arg (ap, _Complex int);
+}
Index: gcc/tree-stdarg.c
===================================================================
--- gcc/tree-stdarg.c (revision 246334)
+++ gcc/tree-stdarg.c (working copy)
@@ -1058,7 +1058,7 @@ expand_ifn_va_arg_1 (function *fun)
gimplify_assign (lhs, expr, &pre);
}
else
- gimplify_expr (&expr, &pre, &post, is_gimple_lvalue, fb_lvalue);
+ gimplify_and_add (expr, &pre);
input_location = saved_location;
pop_gimplify_context (NULL);
Would appreciate any additional testing from James and Andrew -- thanks!
