base64: fix for unsigned chars (e.g. ARM).

[ccan] / ccan / tap / tap.h

diff --git a/ccan/tap/tap.h b/ccan/tap/tap.h
index 5b21ff756a89a9dd64c2caf61f2899fe65e5e272..22c245d53705ff7f48b273e568984dc5bf3626f2 100644 (file)
--- a/ccan/tap/tap.h
+++ b/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 */