output/legacy: when converting OUT_SEGMENT, clear the offset

Legacy backends like obj/omf may depend on the offset being zero if not in use. Reported-by: Bernd Boeckmann <[email protected]> Reported-by: Vladimir Chebotarev <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
netwide-assembler · Oct 17, 2023 · 21c977e · 21c977e
1 parent 7d5e549
commit 21c977e
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/output/legacy.c b/output/legacy.c
@@ -1,6 +1,6 @@
 /* ----------------------------------------------------------------------- *
  *
- *   Copyright 2016-2022 The NASM Authors - All Rights Reserved
+ *   Copyright 2016-2023 The NASM Authors - All Rights Reserved
  *   See the file AUTHORS included with the NASM distribution for
  *   the specific copyright holders.
  *
@@ -89,8 +89,11 @@ void nasm_do_legacy_output(const struct out_data *data)
 
     case OUT_SEGMENT:
         type = OUT_ADDRESS;
-        tsegment |= 1;
-        /* fall through */
+        if (tsegment != NO_SEG && tsegment < SEG_ABS)
+            tsegment |= 1;
+        dptr = zero_buffer;
+        size = data->size;
+        break;
 
     case OUT_ADDRESS:
         dptr = &data->toffset;