https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95767
Bug ID: 95767
Summary: No warning when branching on two identical conditions
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mrbart at gmx dot com
Target Milestone: ---
Created attachment 48757
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48757&action=edit
Minimal-working example
#include <iostream>
#include <string>
int main() {
std::string input;
std::cin >> input;
std::string output;
if (input == "option1") output = "option1 chosen";
else if (input == "option2") output = "option2 chosen";
else if (input == "option2") output = "option3 chosen";
return 0;
}
Shouldn't the compiler issue a warning that we check twice for the same
condition? Copy-and-past quickly can lead to a mistake here.
Compiled with:
g++ -Wall -Wextra Test.cpp
Tested on:
gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008
Ubuntu Linux 19.10 64 bit
Intel® Core™ i5-2500 CPU
