On Mon, Oct 14, 2019 at 02:01:57PM +0200, Florian Weimer wrote: > > What will this do to debuggability? Not much I hope... There are many > > comparable cases where we lose variable contents of callers. > > The values saved belong to the caller's frame. On most ABIs this is on the callee's stack, instead. The debugger uses it to reconstruct the register values at the time the callee was entered. If there is no caller (in the debugged program), things of course work fine like you say. But if there is a caller, which can also happen with functions that do not return, things are not so clear. Relatedly we always make sure to make backtracing work even without debug info, for noreturn calls... I cannot find the PR(s) for that currently, sorry. (I think we shouldn't do that either, btw: people should just enable more debug info if they want full backtraces: they have to for other reasons already!) > > Could you open a feature request please? > > I filed: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92086> Thanks! Segher
