https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66013
--- Comment #4 from vries at gcc dot gnu.org ---
Tentative patch:
...
diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c
index efabda7..b334e79 100644
--- a/gcc/tree-stdarg.c
+++ b/gcc/tree-stdarg.c
@@ -62,6 +62,7 @@ along with GCC; see the file COPYING3. If not see
#include "tree-cfg.h"
#include "tree-pass.h"
#include "tree-stdarg.h"
+#include "tree-ssa.h"
/* A simple pass that attempts to optimize stdarg functions on architectures
that need to save register arguments to stack on entry to stdarg functions.
@@ -1111,6 +1112,7 @@ expand_ifn_va_arg_1 (function *fun)
free_dominance_info (CDI_DOMINATORS);
update_ssa (TODO_update_ssa);
+ execute_update_addresses_taken ();
}
/* Expand IFN_VA_ARGs in FUN, if necessary. */
...
We just update address_taken between ifn_va_arg expansion and the pass_stdarg
optimization.
