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-rw-r--r--m4/output.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/m4/output.c b/m4/output.c
index cbd37abe..72902f36 100644
--- a/m4/output.c
+++ b/m4/output.c
@@ -1098,7 +1098,7 @@ m4_freeze_diversions (m4 *context, FILE *file)
|| file_stat.st_size != (unsigned long int) file_stat.st_size)
m4_error (context, EXIT_FAILURE, errno, NULL,
_("diversion too large"));
- xfprintf (file, "D%d,%lu\n", diversion->divnum,
+ xfprintf (file, "%c%d,%lu\n", 'D', diversion->divnum,
(unsigned long int) file_stat.st_size);
}