0.5.0

Added

• fastjson_last_error_pos() and fastjson_last_error_info(): surface the byte offset and 1-based line/column of the most recent parse error (yyjson computed it, fastjson previously discarded it).
• fastjson_pointer_exists(): report whether an RFC 6901 JSON Pointer resolves, distinguishing present-but-null from absent, without materializing into PHP.
• fastjson_pointer_set(): set the value at an RFC 6901 JSON Pointer and return the re-serialized document.

Fixed

• JsonSerializable use-after-free when jsonSerialize() drops the object's last live reference (bug77843).
• fastjson_encode() rejects a $depth above INT_MAX instead of encoding containers ext/json refuses.
• JSON_PRETTY_PRINT renders an object with only private/protected properties as {} rather than {\n}, matching ext/json.
• fastjson_pointer_get() and fastjson_pointer_exists() clear a stale error on an absent pointer under JSON_THROW_ON_ERROR, per the documented absent signal.

Performance

• Pretty-print encode fills deep indentation with a single memcpy instead of per-level appends.
• Faster decode/encode on common inputs: ASCII UTF-8 bulk-skip validation, inline bigint formatting, and JSON_NUMERIC_CHECK fast-reject of non-numeric strings.

Build

• Prebuilt .so binaries for Linux glibc (x86_64, arm64) and macOS (arm64) on PHP 8.4/8.5, published as release assets; PIE installs these instead of source-building on those targets.