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-rw-r--r--libguile/null-threads.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libguile/null-threads.h b/libguile/null-threads.h
index 40eaa4292..14d40eea2 100644
--- a/libguile/null-threads.h
+++ b/libguile/null-threads.h
@@ -50,6 +50,8 @@
no new threads can be created.
*/
+#error temporarily broken, compile with threads enabled (default option)
+
/* We can't switch so don't bother trying.
*/
#undef SCM_THREAD_SWITCHING_CODE