Use (ice-9 threads) so that with-mutex is defined.

diff --git a/ice-9/syncase.scm b/ice-9/syncase.scm
index 1a2cc01..8d61bd1 100644 (file)
--- a/ice-9/syncase.scm
+++ b/ice-9/syncase.scm
@@ -43,6 +43,7 @@
 
 (define-module (ice-9 syncase)
   :use-module (ice-9 debug)
+  :use-module (ice-9 threads)
   :export-syntax (sc-macro define-syntax eval-when fluid-let-syntax
                  identifier-syntax let-syntax
                  letrec-syntax syntax syntax-case  syntax-rules