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-rw-r--r--src/jtag/drivers/driver.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/jtag/drivers/driver.c b/src/jtag/drivers/driver.c
index c57386a4..45c5d10a 100644
--- a/src/jtag/drivers/driver.c
+++ b/src/jtag/drivers/driver.c
@@ -215,7 +215,10 @@ int interface_jtag_add_dr_scan(int in_num_fields, const struct scan_field *in_fi
if (!tap->bypass)
{
- struct scan_field * start_field = field; /* keep initial position for assert() */
+#ifndef NDEBUG
+ /* remember initial position for assert() */
+ struct scan_field *start_field = field;
+#endif /* NDEBUG */
for (int j = 0; j < in_num_fields; j++)
{