On Thu, 2020-09-17 at 14:41 -0700, Nick Desaulniers wrote:
> On Wed, Sep 16, 2020 at 1:19 PM Joe Perches <joe@xxxxxxxxxxx> wrote:
> > On Wed, 2020-09-16 at 13:02 -0700, Nick Desaulniers wrote:
> > > * (call of function with __attribute__(__noreturn__))
> >
> > I guess panic counts. I count 11 of those.
> >
> > Are there any other uses of functions with __noreturn
> > in switch/case label blocks?
>
> If you look at global_noreturns in tools/objtool/check.c:
> 145 static const char * const global_noreturns[] = {
> 146 "__stack_chk_fail",
> 147 "panic",
> 148 "do_exit",
> 149 "do_task_dead",
> 150 "__module_put_and_exit",
> 151 "complete_and_exit",
> 152 "__reiserfs_panic",
> 153 "lbug_with_loc",
> 154 "fortify_panic",
> 155 "usercopy_abort",
> 156 "machine_real_restart",
> 157 "rewind_stack_do_exit",
> 158 "kunit_try_catch_throw",
> 159 };
>
> Whether they occur or not at the position you ask; I haven't checked.
Just fyi:
Other than the 11 instances of panic, I found only a
single use of any other function above in a switch/case:
drivers/pnp/pnpbios/core.c:163: complete_and_exit(&unload_sem, 0);
case PNP_SYSTEM_NOT_DOCKED:
Found with:
$ grep-2.5.4 -rP --include=*.[ch] -n '\b(?:__stack_chk_fail|panic|do_exit|do_task_dead|__module_put_and_exit|complete_and_exit|__reiserfs_panic|lbug_with_loc|fortify_panic|usercopy_abort|machine_real_restart|rewind_stack_do_exit|kunit_try_catch_throw)\s*(?:\([^\)]*\))?\s*;\s*(case\s+\w+|default)\s*:' *
