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-rw-r--r--core/ccan/tap/tap.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/core/ccan/tap/tap.h b/core/ccan/tap/tap.h
index 5b21ff7..22c245d 100644
--- a/core/ccan/tap/tap.h
+++ b/core/ccan/tap/tap.h
@@ -246,6 +246,6 @@ void plan_skip_all(const char *reason);
*
* This can be used to ease debugging, or exit on the first failure.
*/
-void (*tap_fail_callback)(void);
+extern void (*tap_fail_callback)(void);
#endif /* CCAN_TAP_H */