Revision history for Frozen

0.07    2026-09-16
        - a scalar's kind is read from the public SV flags, not the private
          ones. A cached conversion is not a type: 1.5 compared against an
          integer leaves the truncated 1 in its IV slot, and freeze stored
          that 1 as an integer. Two freezes of untouched data now agree
          however the data was read in between.
        - lossy_nv governs only what a double cannot hold at all: a value
          past DBL_MAX, or a non-zero one under the smallest denormal.
          Rounding a wider NV is the format. Without this, every perl built
          -Duselongdouble refused nearly every NV it was given.

0.06    2026-09-11
        - documents stringify

0.05    2026-09-11
        - ABI version 4. freeze and freeze_container take a flags word 
        - stringify => 1 stores every defined non-reference scalar as its
          string form. A reader that returns text otherwise has to bridge
          the gap itself, because JSON's 5 decodes to an IV and freezes as
          an integer, and str answers NULL for it.

0.04    2026-09-10
        - ABI version 3, appending three entries: borrow attaches to bytes
          in place without copying them, for a block the caller owns and
          that outlives the reader; release is close without an
          interpreter; verify walks a block and says whether its structure
          holds together. What borrow saves scales with the block: nothing
          much at 568 bytes, nearly all of it at three megabytes.

0.03    2026-09-10
        - ABI version 2, appending three entries: freeze and
          freeze_container build a block from Perl data through the table
          rather than through the Perl surface, and val_at reads a hash
          value by index the way at() already reads an array element.
        - freeze_container adopts the bytes it just built instead of
          copying them, so a consumer that freezes at boot pays one
          allocation where freeze-then-attach paid two.

0.02    2026-09-10
        - fixes the Windows build: the ABI's own selftest called the table's
          close member, which XSUB.h redefines as a macro under
          PERL_IMPLICIT_SYS.

0.01    2026-09-10
        - First version.