treat exit 127 ass error

posix_spawnp(3) may report exec() failures via the
child's exit status (127) instead of the return value

diff --git a/src/utils.c b/src/utils.c
index ad22890d97d25c1d31b04c4f79280fd8fc7c9b88..38dd2e07d8cb30decdacaac08e280cbfdc0b555f 100644 (file)
--- a/src/utils.c
+++ b/src/utils.c
@@ -198,6 +198,13 @@ exec_and_wait(const char *arg, ...)
        if (!WIFEXITED(pstat))
                return (-1);
 
+       /*
+        * posix_spawnp(3) may report exec() failures via the child's exit
+        * status (127) instead of the return value.
+        */
+       if (WEXITSTATUS(pstat) == 127)
+               return (-1);
+
        return (WEXITSTATUS(pstat));
 }