eval.c: no method calls at stack overflow

* eval.c (setup_exception): get rid of method calls before raising
  stack overflow, not to cause stack overflow again.
* defs/id.def: add IDs for backtraces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46593 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 3 deletions

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index e9dc27139a..8cd9295d66 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -24,12 +24,18 @@
 
 static rb_control_frame_t *vm_get_ruby_level_caller_cfp(rb_thread_t *th, rb_control_frame_t *cfp);
 
-static void
-vm_stackoverflow(void)
+VALUE
+ruby_vm_sysstack_error_copy(void)
 {
     VALUE e = rb_obj_alloc(rb_eSysStackError);
     rb_obj_copy_ivar(e, sysstack_error);
-    rb_exc_raise(e);
+    return e;
+}
+
+static void
+vm_stackoverflow(void)
+{
+    rb_exc_raise(ruby_vm_sysstack_error_copy());
 }
 
 static inline rb_control_frame_t *