https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62296
Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2014-09-02 Ever confirmed|0 |1 --- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- On x86_64-apple-darwin13.3, for the test in comment 1 I get 0 0 '' sh: /bin/false: No such file or directory 127 0 '' sh: /nosuchfile: No such file or directory 127 0 '' 0 sh: /bin/false: No such file or directory 127 sh: /nosuchfile: No such file or directory 127 From https://groups.google.com/forum/?hl=en#!topic/comp.lang.fortran/6ymZIb6flDg it seems that you are expecting too much of the EXECUTE_COMMAND_LINE options.