[Bug middle-end/60741] [-Wmaybe-uninitialized] false negative and confusing warning message

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60741

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |manu at gcc dot gnu.org

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
We don't warn for fb(), because PR18501.

So the only original bug here is the location when warning. The problem is the
locations that are propagated when transforming expressions. We reach:

  # n_4 = PHI <n_5(D)(3), [test.cc : 6:17] 1(6), [test.cc : 7:17] 2(4)>
<L3>:
  [test.cc : 20:32] # RANGE [-2147483648, 2147483647] NONZERO
0x00000000000000007
  _2 = n_4 + 1;

When instead we should have a location for n_4 that is different than the
location for '+'.

In any case, pointing to the closing parenthesis is very confusing. At worst it
should point to the '+'.