[Bug c/23087] New: Misleading warning, "... differ in signedness"

["kst at mib dot org" <gcc-bugzilla at gcc dot gnu dot org>]

% cat tmp.c
void foo(void)
{
    signed char   *ps = "signed?";
    unsigned char *pu = "unsigned?";
}
% gcc --version
gcc (GCC) 4.0.0
Copyright (C) 2005 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

% gcc -c tmp.c
tmp.c: In function 'foo':
tmp.c:3: warning: pointer targets in initialization differ in signedness
tmp.c:4: warning: pointer targets in initialization differ in signedness


Plain char is either signed or unsigned, depending on the system configuration.
Both initializations call for warnings, since plain char is a distinct type
from both signed char and unsigned char, but in one of the two cases it
doesn't actually "differ in signedness".

-- 
           Summary: Misleading warning, "... differ in signedness"
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kst at mib dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2.9
  GCC host triplet: sparc-sun-solaris2.9
GCC target triplet: sparc-sun-solaris2.9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23087