* vm_insnhelper.c (vm_push_frame): fix stack overflow check codes.

  Stack overflow check should be done *after* pushing a stack frame.
  However, some stack overflow checking codes checked *before*
  pushing a stack frame with iseq->stack_max.
  To solve this problem, add a new parameter `stack_max' to specify
  a possible consuming stack size.
* vm_core.h (CHECK_VM_STACK_OVERFLOW0): add to share the stack overflow
  checking code.
* insns.def: catch up this change.
* vm.c, vm_eval.c: ditto.
* test/ruby/test_exception.rb: add a stack overflow test.
  This code is reported by nobu.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42398 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/insns.def b/insns.def
index 2a51424a0d..b5ca35c44b 100644
--- a/insns.def
+++ b/insns.def
@@ -972,7 +972,7 @@ defineclass
     vm_push_frame(th, class_iseq, VM_FRAME_MAGIC_CLASS,
 		  klass, 0, VM_ENVVAL_BLOCK_PTR(GET_BLOCK_PTR()),
 		  class_iseq->iseq_encoded, GET_SP(),
-		  class_iseq->local_size, 0);
+		  class_iseq->local_size, 0, class_iseq->stack_max);
     RESTORE_REGS();
 
     INC_VM_STATE_VERSION();