http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59499
Bug ID: 59499 Summary: Probably optimization error Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: desoft at freemail dot gr definefunc(L"int-",[](){stack.push(-(stack.pop())+(stack.pop()));}); The above function is defined in order to subtract the tos of the stack from the lower number, but the result is wrong. In order to have it work correctly I have to redefine it like: {int i2=stack.pop();int i1=stack.pop();stack.push(i1-i2);} I have changed parentheses and order keeping the same semantics but nothing changed. It is a reproducible bug under current circumstances. I donĀ“t send all the code because it is big, but I may create a complete example f that is felt as needed.