[Bug tree-optimization/103961] [12 Regression] gcc-12 apparently miscompiles libcap's cap_to_text() function

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103961

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Keywords|                            |diagnostic

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #9)
> Reduced testcase:

Note this is -O1 -Wall.

This is definitely a change in objsz which is calculating the size wrong.

We get:
<source>: In function 'cap_to_text':
<source>:18:29: warning: '+' directive writing 1 byte into a region of size 0
[-Wformat-overflow=]
   18 |                 sprintf(p, "+");
      |                             ^