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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/99959] [9/10/11 Regression] missing -Wuninitialized
 for an esra variable with TREE_NO_WARNING
Date: Wed, 07 Apr 2021 15:10:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99959

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|missing -Wuninitialized for |[9/10/11 Regression]
                   |an esra variable with       |missing -Wuninitialized for
                   |TREE_NO_WARNING             |an esra variable with
                   |                            |TREE_NO_WARNING
           Keywords|                            |diagnostic
      Known to fail|                            |10.2.0, 11.0, 6.3.0, 7.0.1,
                   |                            |8.3.0, 9.3.0
             Blocks|                            |24639

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning has been suppressed since r230968 (6.0.0 20151126).  Until then,
GCC issued:

pr99959.c:7:5: warning: =E2=80=98FRAME.0.i=E2=80=99 is used uninitialized i=
n this function
[-Wuninitialized]
     __builtin_printf ("%i", i);   // missing -Wuninitialized
     ^~~~~~~~~~~~~~~~~~~~~~~~~~


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues=