inst/include/qdata-cpp/CHANGELOG.md

In qs2: Efficient Serialization of R Objects

1.1.0 - 2026-04-08

Format compatibility and limits

• enforced the R-compatible size limits on both read and write:
• vector and list lengths capped to the R-compatible R_XLEN_T_MAX range
• attribute counts capped to the R-compatible R_LEN_T_MAX / INT_MAX range
• string payload and attribute-name lengths capped to INT_MAX
• added native recursion-depth protection with a configurable max_depth parameter and a default of 512
• documented that native qdata-cpp preserves attributes structurally as name + object pairs and does not try to emulate R's special attribute-setter semantics

Serialization internals

• replaced the old templated in-memory writer core with a shared erased writer path
• kept the public templated buffer-facing serialize surface on top of that erased writer implementation
• tightened the installed include tree so the standalone include/ root is self-contained for downstream consumers

Testing and vendoring

• added native regression coverage for the compatibility limits and max_depth behavior
• updated the vendored xxHash copy from 0.8.2 to 0.8.3

1.0.0 - 2026-04-07 - commit 1d21f34dbcaa

• initial release

qs2 documentation built on April 22, 2026, 9:07 a.m.