[Bug fortran/36342] [4.4 Regression] Missing file name in compilation diagnostics of preprocessed fortran source

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

------- Comment #14 from dfranke at gcc dot gnu dot org  2008-06-18 16:48 -------
> Question: I get the following:
>   /tmp/ccpoBhQR.f90:8: warning: 'junk_2' is used uninitialized in this function
> What puzzles me is that one gets a /tmp/... filename and not the filename one
> passed to "gfortran -cpp". Is this expected? I thought that when using libcpp
> directly, no temporary file is written anymore.

Heisenbug it seems. On x86_64 (20080617) I get:
$> gfortran-svn -Wall -O pr36342.F90
pr36342.F90: In function 'test':
pr36342.F90:4: warning: 'junk_2' is used uninitialized in this function

Running f951 as output by "gfortran [...] -v" gives:
pr36342.F90: In function 'test':
pr36342.F90:4: warning: 'junk_2' is used uninitialized in this function

BUT, prefixing valgrind (otherwise identical to the call above) results in:
/tmp/ccIl84Yu.f90: In function 'test':
/tmp/ccIl84Yu.f90:4: warning: 'junk_2' is used uninitialized in this function

In addition, valgrind shows multiple invalid-reads as quoted in earlier
comments.



$> gfortran-svn -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: /data/home/daniel/svn/gcc-svn/configure
--prefix=/data/home/daniel/x86_64-unknown-linux-gnu/gcc --program-suffix=-svn
--with-gmp=/data/home/daniel/x86_64-unknown-linux-gnu/gmp-4.2.1
--with-mpfr=/data/home/daniel/x86_64-unknown-linux-gnu/mpfr-2.2.1
--with-system-zlib --enable-bootstrap --enable-threads=posix --enable-shared
--enable-version-specific-runtime-libs --enable-languages=c,fortran
--disable-nls --disable-multilib --disable-libmudflap
Thread model: posix
gcc version 4.4.0 20080617 (experimental) (GCC)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36342