https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87881
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Hi Paul, > I am getting nowhere with this. ... Did you try to run gfortran under valgrind? I think there is a latent bug in gfortran that triggers the ==82437==ERROR: AddressSanitizer: heap-use-after-free on address 0x6170000053d8 at pc 0x0001001565a9 bp 0x7ffeefbfcb60 sp 0x7ffeefbfcb58 READ of size 8 at 0x6170000053d8 thread T0 ... pr52622 gcc fortran unassig...@gcc.gnu.org NEW --- heap-use-after-free with instrumented compiler 2018-07-24 pr78746 gcc fortran unassig...@gcc.gnu.org NEW --- charlen_03, charlen_10 ICE 2018-07-24 pr81531 gcc fortran unassig...@gcc.gnu.org NEW --- Multiple Invalid reads seen by valgrind on an invalid test-case 2018-07-24 pr87881 gcc fortran unassig...@gcc.gnu.org NEW --- gfortran.dg/inquiry_type_ref_(1.f08|3.f90) fail on darwin Sat 18:32 pr87908 gcc fortran unassig...@gcc.gnu.org NEW --- ICE in check_interface0, at fortran/interface.c:1841 2018-11-06 pr79524 gcc fortran unassig...@gcc.gnu.org NEW --- [7/8/9 Regression] valgrind error for gcc/testsuite/gfortran.dg/fimplicit_none_2.f90 2018-10-26 pr82721 gcc fortran unassig...@gcc.gnu.org NEW --- [7/8/9 Regression] Error message with corrupted text, sometimes ICE 2018-07-24 pr84245 gcc fortran unassig...@gcc.gnu.org NEW --- [7/8/9 Regression] ICE in delete_root, at fortran/bbt.c:150 2018-02-07 pr86657 gcc fortran unassig...@gcc.gnu.org NEW --- ASAN error: heap-use-after-free gcc/fortran/symbol.c:1762 in gfc_add_flavor 2018-07-24 pr87994 gcc fortran unassig...@gcc.gnu.org NEW --- ICE in match_data_constant, at fortran/decl.c:399 19:01:42 > Have you joined the 'gilets jaunes' today ;-) I hate the people behind it!-(