[Ctool-develop] testing the gcc test suite

[Stefan S. <se...@sy...>]

hi there,

I'm looking into the regression testing as I want
to get that up and running again as a precondition
for any non-trivial code changes. Specifically, I'm
looking into the gcc test suite.

Trying to compile the 'attrib' test, I run into
various problems:

* the file containing the expected output (run/attrib.out)
   contains a lot more than the output generated by
   the actual test run ('../../src/ctdemo run/attrib.c'),
   i.e. symbol, tag, and label listings. It seems the
   command used by the run_suite script isn't quite
   complete. Adding '-d' will add most of the missing
   stuff, though the listed names are mangled somehow,
   they appear to contain the location in the source file
   or something like that...

* the run/attrib.c file compiled with my gcc (3.2.2)
   generates a warning:

run/attrib.c:14: Warning - old-style declaration or incorrect type:
         __attribute__ ((__format__ (printf, 2, 3)));

   Is that a recent addition to gcc ? Should that be fixed
   in the ctool ? Or is there something else that can be
   done to make this warning go away ?

   The same warning is issued at various places with other
   source files from that test suite as well.

* /usr/include/gconf.h generates an error message:

/usr/include/gconv.h:176: Unsized array not allowed as field:
   __extension__ struct __gconv_step_data __data [];

   Unfortunately I'm not a C expert, so I can't really comment
   on this, other than that I see the line in gram.y that issues this
   message. I'v no idea whether that's a gcc extension, or generally
   how to deal with that.

* once again the question concerning 'warning: "__STDC__" redefined':
   what's causing this ? Does the ctdemo define and inject that macro
   into the preprocessor ? It seems to be defined by my system (either
   compiler or system headers or a combination thereof).

I would hugely appreciate some help on getting this stuff up and running,
it would make it much easier to validate future code changes...

Thanks a lot !

		Stefan