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-rw-r--r--test/packing/packing-test.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/test/packing/packing-test.c b/test/packing/packing-test.c
index 803e1fb2b37..32b7d3d17ec 100644
--- a/test/packing/packing-test.c
+++ b/test/packing/packing-test.c
@@ -37,6 +37,8 @@ check(const char *fmt, ...)
va_list ap;
size_t len;
+ len = 0; /* -Werror=maybe-uninitialized */
+
va_start(ap, fmt);
assert(__wt_struct_sizev(NULL, &len, fmt, ap) == 0);
va_end(ap);