v1.09.50

OpenADS v1.09.50

REVERSE() index function: UDF-based tags build correctly

Field (Vouch, remote ADSCDX): tags whose key expression calls the
Clipper-era Reverse(cString) UDF came out empty — the server
evaluator knew no REVERSE, so every key degraded to ""
("unknown function") and all ordered navigation/seeks on the tag
missed (COPY…WHILE over such an order copied zero rows, while
loopback against a pre-existing good .cdx kept working).

Changes

• New builtin (src/engine/index_expr.cpp): REVERSE(cString)
  byte-reverses its argument, reproducing the client-computed key
  exactly for single-byte (OEM/ANSI) data. Covers tag build,
  index maintenance on writes, and FOR-condition evaluation —
  all share the one evaluator. Client seeks (s + Reverse(d),
  Vouch seekSD) were always correct; only the server side was
  broken.
• Tests: new index_expr: REVERSE byte-reverses a string
  regression case (full-width C(10), composition with UPPER,
  literal with blanks).

Test Results

• MinGW-x64 (GCC 16.2): new test green; #131 index suite 4/4;
  full unit suite 1574/1575 (sole failure pre-existing,
  MinGW-only CDX alloc-tail — verified it fails identically on
  the clean tree).
• Full matrix (Windows MSVC x64/x86, Linux, macOS) runs in CI on the
  tag push.

Field action required

• Rebuild the tag remotely (drop/recreate or REINDEX) —
  the fix does not repair an already-degenerate .cdx.

Packages

• openads-1.09.50-windows-x64.zip
• openads-1.09.50-windows-x86.zip
• openads-1.09.50-linux-x64.tar.gz
• openads-1.09.50-macos-universal.tar.gz

Field triage, release engineering and validation: Pritpal Bedi.