Did I forget to reply all again? Phones! Ah well, here’s the missing CC. Sorry for the HTML mail.
On Mon, 6 Feb 2023 at 02:06, Glenn Golden wrote: > Mingye Wang [2023-02-06 01:56:18 +0800]: > > > > Some quick observations I can do on a phone: > > * Errors occur in gnulib, specifically > > https://github.com/coreutils/gnulib/blob/master/lib/nstrftime.c — we can > > get a smaller test case out of that. > > * Errors are memset calls, which might be turned into a builtin in > > optimized builds. Maybe -fbuiltin-memset hid the issue? > > * The size in the memset call is calculated by macro width_add as `if > > (_n<_w){size_t _delta=_w -_n;}`. The error’s "size" seem to indicate the > > compile-time evaluation somehow underflowed and got -1. > > > > Thanks. > > I would suggest posting the above to the coreutils list; your legwork in > tracing the issue may be of use and interest to them. (I am not a coreutils > developer; I just happened to have stumbled upon the issue, and posted it > as a heads-up to the developers.) > > Glenn > -- -- Mingye Wang (Artoria2e5)
