[Bug bootstrap/26478] New: [4.2 Regression] bootstrap fails with readonly source directory

["jsm28 at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

Bootstrap (e.g. on i686-pc-linux-gnu) fails if the source directory is readonly
(if the individual files are readonly, chmod -R a-w srcdir).  To test this it
suffices to "chmod a-w gcc/unwind-generic.h" then bootstrap, and it fails with

cp ../../gcc-mainline/gcc/unwind-generic.h include/unwind.h
cp: cannot create regular file `include/unwind.h': Permission denied
make[3]: *** [stmp-int-hdrs] Error 1
rm fsf-funding.pod gfdl.pod cpp.pod gpl.pod gcov.pod gcc.pod
make[3]: Leaving directory `/home/jsm28/src/gcc-build/gcc'
make[2]: *** [all-stage2-gcc] Error 2
make[2]: Leaving directory `/home/jsm28/src/gcc-build'
make[1]: *** [stage2-bubble] Error 2
make[1]: Leaving directory `/home/jsm28/src/gcc-build'
make: *** [bootstrap] Error 2

because the previously copied file is readonly.  This appeared between revision
111294 and revision 111327 of trunk and is still present as of revision 111469.


-- 
           Summary: [4.2 Regression] bootstrap fails with readonly source
                    directory
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jsm28 at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26478