1 files changed, 5 insertions, 1 deletions
diff --git a/ident.c b/ident.c
index caf41fb2a9..281e830573 100644
--- a/ident.c
+++ b/ident.c
@@ -59,7 +59,7 @@ static struct passwd *xgetpwuid_self(int *is_bogus)
 
 static void copy_gecos(const struct passwd *w, struct strbuf *name)
 {
-	char *src;
+	const char *src;
 
 	/* Traditionally GECOS field had office phone numbers etc, separated
 	 * with commas.  Also & stands for capitalized form of the login name.
@@ -412,6 +412,10 @@ void apply_mailmap_to_header(struct strbuf *buf, const char **header,
 				found_header = 1;
 				buf_offset += endp - line;
 				buf_offset += rewrite_ident_line(person, endp - person, buf, mailmap);
+				/* Recompute endp after potential buffer reallocation */
+				endp = buf->buf + buf_offset;
+				if (*endp == '\n')
+					buf_offset++;
 				break;
 			}