[Bug symtab/26061] Wrong debug info for argc at -O2

["tankut.baris.aktemur at intel dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=26061

--- Comment #1 from Baris Aktemur <tankut.baris.aktemur at intel dot com> ---
I used gcc-10 ((Ubuntu 10.1.0-2ubuntu1~18.04) 10.1.0) and gdb
(10.0.50.20200525-git), but the scenario did not reproduce.

My initial guess is that it's related to the debug info. I'd suggest printing
the value of argc in hex (e.g. `(gdb) p/x -8454` gives 0xffffdefa) and also
printing the address of local variables, in particular `buf`. Also, doing stepi
multiple times and checking the values each time an instruction is stepped may
help narrow down the problem.

Judging from the title, I conclude you also think that the problem is related
to the debug info. In that case, I believe it would fit better to report this
to gcc, rather than gdb.

PS: Just out of curiosity, I wonder why you CC'ed me to this bug report.
Thanks.

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