1 files changed, 1 insertions, 0 deletions
diff --git a/data/c.m4 b/data/c.m4
index 66d4f6d2..46ced826 100644
--- a/data/c.m4
+++ b/data/c.m4
@@ -367,6 +367,7 @@ m4_define([b4_sync_start], [[#]line $1 $2])
 m4_define([b4_case],
 [  case $1:
 $2
+b4_syncline([@oline@], [@ofile@])
     break;])
 
 # b4_symbol_actions(FILENAME, LINENO,