vm_core.h: extract VM_STACK_OVERFLOWED_P

* vm_core.h (VM_STACK_OVERFLOWED_P, WHEN_VM_STACK_OVERFLOWED): extract
  condition from CHECK_VM_STACK_OVERFLOW.

* vm_exec.c (vm_stack_overflow_for_insn): move rb_bug call.

* vm_exec.h (CHECK_VM_STACK_OVERFLOW_FOR_INSN): share the condition
  with CHECK_VM_STACK_OVERFLOW.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43702 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 0 deletions

diff --git a/vm_exec.c b/vm_exec.c
index c914a8bcca..c7057cd445 100644
--- a/vm_exec.c
+++ b/vm_exec.c
@@ -29,6 +29,15 @@ static void vm_analysis_insn(int insn);
 #endif
 /* #define DECL_SC_REG(r, reg) VALUE reg_##r */
 
+NORETURN(static void vm_stack_overflow_for_insn(void));
+static void
+vm_stack_overflow_for_insn(void)
+{
+    rb_bug("CHECK_VM_STACK_OVERFLOW_FOR_INSN: should not overflow here. "
+	   "Please contact ruby-core/dev with your (a part of) script. "
+	   "This check will be removed soon.");
+}
+
 #if !OPT_CALL_THREADED_CODE
 static VALUE
 vm_exec_core(rb_thread_t *th, VALUE initial)