ko1	2013-12-18 14:33:50 +0900 (Wed, 18 Dec 2013)

  New Revision: 44275

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=44275

  Log:
    * vm_exec.h (VM_DEBUG_STACKOVERFLOW): added.
      disable stack overflow check for every stack pushing as default.
    * vm_exec.c (vm_stack_overflow_for_insn): ditto.

  Modified files:
    trunk/ChangeLog
    trunk/vm_exec.c
    trunk/vm_exec.h
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 44274)
+++ ChangeLog	(revision 44275)
@@ -1,3 +1,10 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Wed Dec 18 14:32:06 2013  Koichi Sasada  <ko1@a...>
+
+	* vm_exec.h (VM_DEBUG_STACKOVERFLOW): added.
+	  disable stack overflow check for every stack pushing as default.
+
+	* vm_exec.c (vm_stack_overflow_for_insn): ditto.
+
 Wed Dec 18 10:00:22 2013  Eric Hodel  <drbrain@s...>
 
 	* lib/rubygems:  Update to RubyGems master d8f12e2.  This increases the
Index: vm_exec.c
===================================================================
--- vm_exec.c	(revision 44274)
+++ vm_exec.c	(revision 44275)
@@ -29,6 +29,7 @@ static void vm_analysis_insn(int insn); https://github.com/ruby/ruby/blob/trunk/vm_exec.c#L29
 #endif
 /* #define DECL_SC_REG(r, reg) VALUE reg_##r */
 
+#if VM_DEBUG_STACKOVERFLOW
 NORETURN(static void vm_stack_overflow_for_insn(void));
 static void
 vm_stack_overflow_for_insn(void)
@@ -37,6 +38,7 @@ vm_stack_overflow_for_insn(void) https://github.com/ruby/ruby/blob/trunk/vm_exec.c#L38
 	   "Please contact ruby-core/dev with your (a part of) script. "
 	   "This check will be removed soon.");
 }
+#endif
 
 #if !OPT_CALL_THREADED_CODE
 static VALUE
Index: vm_exec.h
===================================================================
--- vm_exec.h	(revision 44274)
+++ vm_exec.h	(revision 44275)
@@ -169,7 +169,14 @@ default:                        \ https://github.com/ruby/ruby/blob/trunk/vm_exec.h#L169
 #endif
 
 #define SCREG(r) (reg_##r)
+
+#define VM_DEBUG_STACKOVERFLOW 0
+
+#if VM_DEBUG_STACKOVERFLOW
 #define CHECK_VM_STACK_OVERFLOW_FOR_INSN(cfp, margin) \
     WHEN_VM_STACK_OVERFLOWED(cfp, (cfp)->sp, margin) vm_stack_overflow_for_insn()
+#else
+#define CHECK_VM_STACK_OVERFLOW_FOR_INSN(cfp, margin)
+#endif
 
 #endif /* RUBY_VM_EXEC_H */

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