tree 1c84625e6603d75dd0fa9d1f6bade1d0f9a5f937
parent e5c87cf0421436d33b641ff5d9d3b85f1ff8475a
author Behdad Esfahbod <behdad@behdad.org> 1776539225 -0600
committer Behdad Esfahbod <behdad@behdad.org> 1776539225 -0600

[vector] Strip clip-glyph dedup in SVG paint

push_clip_glyph kept a hash + linear-scan cache of emitted
clip paths to dedup repeated clip-glyph uses within a single
COLRv1 paint tree.  With paint contexts being one-glyph per
use, the cache mostly churned; it also made hb_memcmp trip
on sanitizer-null when an empty path matched an equally-empty
existing entry (fuzzer-reached null-deref).

Drop the cache: always emit a fresh <path> + <clipPath> pair
per push_clip_glyph.  Removes defined_paths / content_entry_t
from the paint struct.

Regenerate the two handwriting COLR expected SVGs whose
clip-reuse now produces distinct path defs.

Assisted-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>