https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47307
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2017-12-30 00:00:00 |2021-4-9
CC| |msebor at gcc dot gnu.org
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning has disappeared at -O1 and above. The expected one for the
uninitialized read from the lopt array is issued now but only at -O0. With
optimization the read is eliminated. Given the large number of open bugs for
-Wuninitialized (pr24639) I'm not sure it's worth keeping this open as well.
$ gcc -O0 -S -Wall pr47307.f90
../pr47307.f90:13:13:
13 | if ( lopt(j,i) < 0 ) then
| ^
Warning: ‘lopt’ may be used uninitialized [-Wmaybe-uninitialized]
../pr47307.f90:8:34:
8 | integer, dimension(3,5) :: lopt
| ^
note: ‘lopt’ declared here
