1 files changed, 14 insertions, 2 deletions

diff --git a/gas/sb.c b/gas/sb.c
index 6a4c4d0..c44016a 100644
--- a/gas/sb.c
+++ b/gas/sb.c
@@ -111,8 +111,20 @@ sb_scrub_and_add_sb (sb *ptr, sb *s)
   sb_to_scrub = s;
   scrub_position = s->ptr;
 
-  sb_check (ptr, s->len);
-  ptr->len += do_scrub_chars (scrub_from_sb, ptr->ptr + ptr->len, s->len);
+  /* do_scrub_chars can expand text, for example when replacing
+     # 123 "filename"
+     with
+     \t.linefile 123 "filename"
+     or when replacing a 'c with the decimal ascii number for c.
+     So we loop until the input S is consumed.  */
+  while (1)
+    {
+      size_t copy = s->len - (scrub_position - s->ptr);
+      if (copy == 0)
+	break;
+      sb_check (ptr, copy);
+      ptr->len += do_scrub_chars (scrub_from_sb, ptr->ptr + ptr->len, copy);
+    }
 
   sb_to_scrub = 0;
   scrub_position = 0;