https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84858
Bug ID: 84858
Summary: wrong exception handling of std::function
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: herumi at nifty dot com
Target Milestone: ---
The following code shows "g" infinitely.
Is my code wrong? Or is it a bug of gcc?
>g++ t.cpp -O2 -std=c++11 && ./a.out
>f
>f
>g
>g
>....
My environments are
Ubuntu 16.04.4 LTS
kernel : 4.4.0-116-generic
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.9)
This was reproduced by g++ 7.2.0, 6.3.0, 5.5.0 with same option -O2 -std=c++11
and not reproduced by clang-5.0 or Visual Studio 2015.
cat t.cpp
---
#include <stdio.h>
#include <functional>
#include <stdexcept>
void f() noexcept
{
puts("f");
}
void g()
{
puts("g");
throw std::runtime_error("err");
}
int main()
{
std::function<void()> a = f;
a();
try{
a();
} catch (...) {
}
std::function<void()> b = g;
try {
b();
} catch (...) {
}
}
---
