[Bug c++/78929] New: Incorrect implementation of Refining Expression Evaluation Order for Idiomatic C++
boostcpp at gmail dot com
gcc-bugzilla@gcc.gnu.org
Mon Dec 26 06:47:00 GMT 2016
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78929
Bug ID: 78929
Summary: Incorrect implementation of Refining Expression
Evaluation Order for Idiomatic C++
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: boostcpp at gmail dot com
Target Milestone: ---
GCC 7 claims to support Refining Expression Evaluation Order for Idiomatic C++,
proposed by P0145R3.
https://gcc.gnu.org/projects/cxx-status.html#cxx1z
Current GCC 7 head does incorrect evaluation on this code.
#include <iostream>
int main()
{
int i = 0 ;
std::cout << ++i + ++i ;
}
The output should be 3 but current GCC 7 head output 4.
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