tests: strip-trailing-cr: avoid failure with ASAN

Valgrind cannot operate on an ASAN-compiled binary.
* tests/strip-trailing-cr (valgrind): Define as no-op when diff
was compiled with sanitizer support.

1 files changed, 6 insertions, 1 deletions

diff --git a/tests/strip-trailing-cr b/tests/strip-trailing-cr
index 3188294..2810595 100755
--- a/tests/strip-trailing-cr
+++ b/tests/strip-trailing-cr
@@ -10,8 +10,13 @@ require_valgrind_
 printf '\r' > r || framework_failure_
 echo b > b || framework_failure_
 
+# Use valgrind only when no Sanitizer is in use:
+ASAN_OPTIONS=help=true diff --help 2>&1 |grep Sanitizer > /dev/null \
+  && eval 'valgrind() { "$@"; }' \
+  || eval 'valgrind() { env valgrind --quiet --error-exitcode=3 "$@"; }'
+
 for opt in '' u c Dfoo; do
-  returns_ 1 valgrind --quiet --error-exitcode=3 \
+  returns_ 1 valgrind \
     diff -a$opt --strip-trailing-cr r b > out 2> err || fail=1
 done