https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88159
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I don't think this is a bug. By default with the C front-end, -fexceptions is
turned off. While with the C++ front-end, it is turned on.
With -O2, run contains a tail called function which just makes this work by
accident as the backtracing turns out that run is not on the call stack any
more.
With -flto, the function run is inlined with a nothrow around it and you end up
with no exception information so there is no where to catch it.
If you used -fexceptions with the C code, it will work correctly.
