[Bug c++/31843] New: -Wformat-nonliteral differs between gcc and g++

[Bug c++/31843] New: -Wformat-nonliteral differs between gcc and g++

[gcc at gaul dot org]

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$ gcc -dumpversion
4.1.1

$ g++ -dumpversion
4.1.1

$ gcc -Wall -Wformat-nonliteral format_nonliteral.c 

$ g++ -Wall -Wformat-nonliteral format_nonliteral.c 
format_nonliteral.c: In function ‘int main(int, char**)’:
format_nonliteral.c:10: warning: format not a string literal, argument types
not checked


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           Summary: -Wformat-nonliteral differs between gcc and g++
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gcc at gaul dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31843

[Bug c++/31843] -Wformat-nonliteral differs between gcc and g++

[gcc at gaul dot org]

------- Comment #1 from gcc at gaul dot org  2007-05-06 08:10 -------
Created an attachment (id=13515)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13515&action=view)
-Wformat-nonliteral test case


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31843

[Bug c++/31843] -Wformat-nonliteral differs between gcc and g++

[manu at gcc dot gnu dot org]

------- Comment #2 from manu at gcc dot gnu dot org  2010-02-21 01:27 -------
Confirmed. The problem is that constant_value_1 has the following code:

      if (!init
          || !TREE_TYPE (init)
          || (integral_p
              ? !INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (init))
              : (!TREE_CONSTANT (init)
                 /* Do not return an aggregate constant (of which
                    string literals are a special case), as we do not
                    want to make inadvertent copies of such entities,
                    and we must be sure that their addresses are the
                    same everywhere.  */
=>               || TREE_CODE (init) == CONSTRUCTOR
                 || TREE_CODE (init) == STRING_CST)))


So it does not consider string constant as constant initializers. I think this
is probably breaking more than this warning.


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manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-02-21 01:27:20
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31843

[Bug c++/31843] -Wformat-nonliteral differs between gcc and g++

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31843

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|gcc-bugs at gcc dot gnu.org |
         Resolution|                            |FIXED

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-01-05 00:32:39 UTC ---
Fixed in 4.7.0.

[Bug c++/31843] -Wformat-nonliteral differs between gcc and g++

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31843

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.0