Fix issue 493: Infinite loop when debug break is set when entering function.apply

src/ia32/regexp-macro-assembler-ia32.cc

 // Copyright 2008-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 580 matching lines @@
   // kBackup_ebx etc.
   __ push(esi);
   __ push(edi);
   __ push(ebx);  // Callee-save on MacOS.
   __ push(Immediate(0));  // Make room for "input start - 1" constant.
 
   // Check if we have space on the stack for registers.
   Label stack_limit_hit;
   Label stack_ok;
 
-  ExternalReference stack_guard_limit =
-      ExternalReference::address_of_stack_guard_limit();
+  ExternalReference stack_limit =
+      ExternalReference::address_of_stack_limit();
   __ mov(ecx, esp);
-  __ sub(ecx, Operand::StaticVariable(stack_guard_limit));
+  __ sub(ecx, Operand::StaticVariable(stack_limit));
   // Handle it if the stack pointer is already below the stack limit.
   __ j(below_equal, &stack_limit_hit, not_taken);
   // Check if there is room for the variable number of registers above
   // the stack limit.
   __ cmp(ecx, num_registers_ * kPointerSize);
   __ j(above_equal, &stack_ok, taken);
   // Exit with OutOfMemory exception. There is not enough space on the stack
   // for our working registers.
   __ mov(eax, EXCEPTION);
   __ jmp(&exit_label_);
@@ skipping 459 matching lines @@
   ASSERT(!target.is(backtrack_stackpointer()));
   __ mov(target, Operand(backtrack_stackpointer(), 0));
   // Notice: This updates flags, unlike normal Pop.
   __ add(Operand(backtrack_stackpointer()), Immediate(kPointerSize));
 }
 
 
 void RegExpMacroAssemblerIA32::CheckPreemption() {
   // Check for preemption.
   Label no_preempt;
-  ExternalReference stack_guard_limit =
-      ExternalReference::address_of_stack_guard_limit();
-  __ cmp(esp, Operand::StaticVariable(stack_guard_limit));
+  ExternalReference stack_limit =
+      ExternalReference::address_of_stack_limit();
+  __ cmp(esp, Operand::StaticVariable(stack_limit));
   __ j(above, &no_preempt, taken);
 
   SafeCall(&check_preempt_label_);
 
   __ bind(&no_preempt);
 }
 
 
 void RegExpMacroAssemblerIA32::CheckStackLimit() {
   Label no_stack_overflow;
@@ skipping 62 matching lines @@
     }
   }
 }
 
 
 #undef __
 
 #endif  // V8_NATIVE_REGEXP
 
 }}  // namespace v8::internal