[Bug c/116767] C const function pointer no code generated (or optimized out)

[muecker at gwdg dot de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116767

--- Comment #4 from Martin Uecker <muecker at gwdg dot de> ---

You are right about both. It gets miscompiled also with side effects and if you
are remove the forward declaration, you get:

<source>:10:21: warning: initialization makes '__attribute__((const))'
qualified function pointer from unqualified [-Wdiscarded-qualifiers]
   10 | const MyFunc* g_f = my_func;