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-rw-r--r--src/cmd/diff/diffreg.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/cmd/diff/diffreg.c b/src/cmd/diff/diffreg.c
index ed4d17b8..478c1b1b 100644
--- a/src/cmd/diff/diffreg.c
+++ b/src/cmd/diff/diffreg.c
@@ -66,6 +66,9 @@
* 3*(number of k-candidates installed), typically about
* 6n words for files of length n.
*/
+
+#define class diffclass
+
/* TIDY THIS UP */
struct cand {
int x;