I'm getting numerous instances of this when I try to compile gdb 7.0.1 on Mac
OSX 10.6.2 running Xcode tools 3.2.1 (gcc version 4.2.1 (Apple Inc. build 5646):

warning: format not a string literal, argument types not checked

since -Werror is set, the build fails.

Here is an example of the warning/error from ppc-dis.c:

  fprintf (stream, _("\n\
The following PPC specific disassembler options are supported for use with\n\
the -M switch:\n"));

The preprocessor spits this out:

  fprintf (stream, libintl_dgettext ("opcodes", "\nThe following PPC specific
disassembler options are supported for use with\nthe -M switch:\n"));

The build appears to fail when there are no arguments in the va_list when the _(
) macro is used.  Not sure why it doesn't fail when there are arguments in the
va_list.