[turbofan] Overload the -- operator under the LookupReturn Iterator

Milad Farazmand · Commit Bot · commit 30ccfb294fdf · 2019-10-29T19:37:13.000Z
Changes introduced in 30ec6a8 generates compilation error in gcc 8.1.0: 8.1.0/include/c++/bits/stl_iterator_base_funcs.h:183:2: error: no match for 'operator--' (operand type is 'v8::internal::HandlerTable::LookupReturn(int)::Iterator') --__i; Which maybe caused by the following change in stl_iterator_base_funcs: https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=248875 Overloading the "--" operator fixes the compilation error. Change-Id: I32f54ddd4993375bf905996b5b1e66cd005256da Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1888190 Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com> Commit-Queue: Clemens Backes <clemensb@chromium.org> Reviewed-by: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#64624}
diff --git a/src/codegen/handler-table.cc b/src/codegen/handler-table.cc
@@ -203,6 +203,10 @@ int HandlerTable::LookupReturn(int pc_offset) {
       index++;
       return *this;
     }
+    Iterator& operator--() {
+      index--;
+      return *this;
+    }
     Iterator& operator+=(difference_type offset) {
       index += offset;
       return *this;
