From 621da983093b0877d061c0fa081c0301ea8ffd3f Mon Sep 17 00:00:00 2001 From: ko1 Date: Fri, 26 Jul 2013 10:28:26 +0000 Subject: * vm_exec.h, tool/instruction.rb: not an error, but a BUG if stack overflow checking failed just before/after the beginning of an instruction. It should be treated as a BUG. Please tell us if your code cause BUG with this problem. This check will removed soon (for performance). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42194 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- vm_exec.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'vm_exec.h') diff --git a/vm_exec.h b/vm_exec.h index 3c7e35e238..b785c4fdd3 100644 --- a/vm_exec.h +++ b/vm_exec.h @@ -169,5 +169,9 @@ default: \ #endif #define SCREG(r) (reg_##r) +#define CHECK_VM_STACK_OVERFLOW_FOR_INSN(cfp, margin) \ + if ((VALUE *)((char *)(((VALUE *)(cfp)->sp) + (margin)) + sizeof(rb_control_frame_t)) >= ((VALUE *)(cfp))) { \ + 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."); \ + } while (0); #endif /* RUBY_VM_EXEC_H */ -- cgit v1.2.1