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From: "giecrilj at stegny dot 2a.pl" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/49754] New: Let gcc warn about all uninitialized variables
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D49754

           Summary: Let gcc warn about all uninitialized variables
           Product: gcc
           Version: 4.5.1
               URL: https://bugzilla.novell.com/show_bug.cgi?id=3D705160#c1
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: giecrilj@stegny.2a.pl


The compiler gcc currently warns about uninitialized scalar variables but n=
ot
about compound variables.

=3D=3D Steps to Reproduce =3D=3D
  1.=20
{ cat>foo.c<<'/* EOF */' && gcc -Wall -pedantic-errors foo.c; }
struct i { int x; };
struct i foo () { struct i x; return x; }
int bar () { int y; return +y; }
/* EOF */

=3D=3D Actual Results =3D=3D=20=20
foo.c: In function =E2=80=98bar=E2=80=99:
foo.c:3:21: warning: =E2=80=98y=E2=80=99 is used uninitialized in this func=
tion


=3D=3D Expected Results =3D=3D=20=20
foo.c: In function =E2=80=98foo=E2=80=99:
foo.c:2:?: warning: =E2=80=98x=E2=80=99 is used uninitialized in this funct=
ion
foo.c: In function =E2=80=98bar=E2=80=99:
foo.c:3:21: warning: =E2=80=98y=E2=80=99 is used uninitialized in this func=
tion