Fix INSERT INITIAL LINE into hashed tables

[Copilot]

INSERT INITIAL LINE INTO TABLE threw Error: Hash table insert index when the target was a hashed table:

TYPES: BEGIN OF ty,
         field1 TYPE c LENGTH 10,
         field2 TYPE c LENGTH 10,
       END OF ty.
TYPES ty2 TYPE HASHED TABLE OF ty WITH UNIQUE KEY field1.
DATA tab2 TYPE ty2.
INSERT INITIAL LINE INTO TABLE tab2.

The initial branch of insertInternal unconditionally called insertIndex, which HashedTable does not implement.

Changes

• packages/runtime/src/statements/insert_internal.ts: the initial branch now routes HashedTable through insert() with the table's row type, setting sy-subrc from the result (4 on duplicate key) and assigning ASSIGNING / REFERENCE INTO targets only on success.
• test/statements/insert.ts: test covering the issue snippet, including a second insert of the same initial line yielding sy-subrc = 4 and no added row.

• Fixes bug, INSERT INITIAL #1502

[github-actions]

Regression test results:

Repository	Result	Runtime
abap-openapi/abap-openapi	🟢	21s
abapGit/abapGit	🟢	18s
heliconialabs/abap-opentelemetry	🟢	6s
heliconialabs/abap-protobuf	🟢	7s
larshp/abap-advent-2020	🟢	6s
larshp/abap-wasm	🟢	6s
larshp/abapNTLM	🟢	7s
larshp/abapPGP	🟢	156s
oisee/zork-abap	🟢	8s
open-abap/open-abap-core	🟢	8s
open-abap/open-abap-gui	🟢	6s
open-abap/open-abap-jobs	🟢	15s
open-abap/open-abap-lock	🟢	11s
open-abap/open-abap-odata	🟢	8s
open-abap/open-table-maintenance	🟢	16s
SAP/abap-file-formats-tools	🟢	18s
Sumu-Ning/AES	🟢	7s

Performance test results:

Performance	Before	After	Delta
1: APPEND and DELETE	912ms	936ms	24 🟢
2: READ TABLE, table_line	1051ms	1045ms	-6 🟢
3: LOOP USING KEY	1287ms	1264ms	-23 🟢
4: Copy, same sorting	275ms	268ms	-7 🟢
5: Copy, becomes sorted	61ms	62ms	1 🟢
6: INSERT INDEX 1	740ms	729ms	-11 🟢
7: APPEND matching types	373ms	364ms	-9 🟢
8: READ TABLE BINARY SEARCH	67ms	68ms	1 🟢
9: INSERT INTO TABLE hashed	377ms	369ms	-8 🟢
10: DELETE ADJACENT	1502ms	1496ms	-6 🟢
11: READ WITH TABLE KEY HASHED	269ms	269ms	0 🟢
12: READ WITH KEY HASHED, primary	371ms	365ms	-6 🟢
13: INSERT INTO TABLE standard	39ms	39ms	0 🟢
14: Constant characters	72ms	71ms	-1 🟢
15: Compare characters	127ms	121ms	-6 🟢
16: Method number 5 🎶	860ms	821ms	-39 🟢
17: Substring and find negative	280ms	266ms	-14 🟢
18: CO compare	199ms	195ms	-4 🟢
19: Call method, compatible structure	119ms	117ms	-2 🟢
20: Call method, identical structure	22ms	22ms	0 🟢
21: CASE many char constants	377ms	366ms	-11 🟢
22: READ TABLE WITH KEY secondary	54ms	52ms	-2 🟢
23: CASE many int constants	372ms	364ms	-8 🟢
24: Copy table contents	314ms	336ms	22 🟢
25: READ TABLE, not found	23ms	23ms	0 🟢
26: REPLACE OCCURRENCES, simple	138ms	141ms	3 🟢
27: READ TABLE, building hash	83ms	74ms	-9 🟢
28: CONCATENATE	2ms	2ms	0 🟢
29: Write Hex to Hex via offset	1335ms	1376ms	41 🟢
30: Get Hex from Hex via offset	9ms	10ms	1 🟢
31: SET BIT hex	1344ms	1359ms	15 🟢
32: GET BIT hex	1215ms	1098ms	-117 🟢
33: Compare Hex	829ms	838ms	9 🟢
34: Basic CONCATENATE	71ms	71ms	0 🟢
35: gt	370ms	377ms	7 🟢
36: CLEAR char	262ms	262ms	0 🟢
37: CLEAR numc	243ms	242ms	-1 🟢
38: Structure copy and APPEND	901ms	874ms	-27 🟢
39: eq int	1375ms	1387ms	12 🟢
40: eq string	1266ms	1209ms	-57 🟢
41: eq char, different lengths	237ms	245ms	8 🟢
42: eq int with numc	213ms	231ms	18 🟢

Updated: 2026-07-30T11:23:48.308Z

SHA: b1a7fe5