fix #1904
/dev/null permissions were modified when using sudo rights.
This fixes this bug during decompression.
More importantly, this patch adds a test, triggered in TravisCI,
ensuring unaltered /dev/null permissions.
diff --git a/.travis.yml b/.travis.yml
index e17dba6..ec1adab 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,7 +34,8 @@
- name: make test (complete)
script:
- - make test
+ # DEVNULLRIGHTS : will request sudo rights to test permissions on /dev/null
+ - DEVNULLRIGHTS=test make test
- name: gcc-6 + gcc-7 compilation
script: