http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57072
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
Accurate warnings from -Wuninitialized depends on various optimizers being
allowed to do their job. -fno-tree-vrp in this case disables collpasing a
conditional so a singularity and disables the first jump threading pass.
In combination these two prevent the CFG from being optimized enough to prove
the value can't be used uninitialized.
*** This bug has been marked as a duplicate of bug 42145 ***
