https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78150
Bug ID: 78150 Summary: Runtime segmentation fault when write variable on string Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: mirco.valentini at polimi dot it Target Milestone: --- Environment: ----------- - Debian 8 - gfortran 7.0.0 20161023 Problem: ------- When I try to write a variable on a string the result is a runtime segmentation fault in small programs and an empty string in bigger programs. The problem was not present in gfortran 6.0.0 20160320, maybe it is related to UDTIO. Example: ------- Here is a small example program that expose the problem: !================================================================ PROGRAM write_on_string CHARACTER(LEN=10) :: str INTEGER :: a a = 4 WRITE(str,'(I2)') a END PROGRAM write_on_string !================================================================