[PATCH 4/4] tests: od: avoid large mem allocation due to MALLOC_PERTURB_

[Pádraig Brady]

 $ export MALLOC_PERTURB_=$(($RANDOM % 255 + 1))
 $ testmem() {
    env time -f %M \
    make TESTS="$*"RUN_VERY_EXPENSIVE_TESTS=yes SUBDIRS=. check
   }

 # Before change
 $ testmem tests/od/big-w.sh
 2965404 # 3GB

 # After change
 $ testmem tests/od/big-w.sh
 14136

* tests/od/big-w.sh: Disable MALLOC_PERTURB_.
Also remove the redundant setting of LC_ALL.
---
 tests/od/big-w.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/od/big-w.sh b/tests/od/big-w.sh
index 7f76bdd05..726089ab2 100755
--- a/tests/od/big-w.sh
+++ b/tests/od/big-w.sh
@@ -21,7 +21,8 @@ print_ver_ od
 very_expensive_
 require_bash_as_SHELL_ # for >()
 
-export LC_ALL=C
+# Minimize actual memory use
+export MALLOC_PERTURB_=0
 
 cat >exp <<'EOF' || framework_failure_
 0000000 x >x<
-- 
2.55.0