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-rw-r--r--src/test/test_util.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/test/test_util.c b/src/test/test_util.c
index 7d43b8156b..21ff75741a 100644
--- a/src/test/test_util.c
+++ b/src/test/test_util.c
@@ -2297,7 +2297,8 @@ test_util_sscanf(void *arg)
}
#define tt_char_op(a,op,b) tt_assert_op_type(a,op,b,char,"%c")
-#define tt_ci_char_op(a,op,b) tt_char_op(tolower(a),op,tolower(b))
+#define tt_ci_char_op(a,op,b) \
+ tt_char_op(TOR_TOLOWER((int)a),op,TOR_TOLOWER((int)b))
#ifndef HAVE_STRNLEN
static size_t