Possible Fortran testsuite failures for default_format_*.f90

Hi, A reworking of Fortran testcases might lead to the following cases failing (or starting to fail): * gfortran.dg/default_format_1.f90 * gfortran.dg/default_format_2.f90 * gfortran.dg/default_format_denormal_1.f90 * gfortran.dg/default_format_denormal_2.f90 This would indicate an i

cgraph, unit-at-a-time, and the "used" attribute

While working on UPC, we ran into an interesting problem where if -O1 is enabled, and -funit-at-a-time is disabled (which is not the default configuration) a static variable declaration was not emitted by the assembler. I haven't quite worked out why this is the case, but reading the code did not