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Merge #6561: M1: a file whose last update has no /Prev opens with all its pages and a repair note (core.repair-broken-files)

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# Conflicts:
#	parity/acrobat-features.toml
#	vendor/README.md
#	vendor/hayro-syntax/src/pdf.rs
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bflatastic committed 2026-11-09 08:11:01 +07:00
2 parents 16312e1a10 f9f279f85e
commit 9e2c8130ad
13 files changed
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parity/acrobat-features.toml
+2 -2
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@@ -46,8 +46,8 @@ milestone = "M1"
status = "shipped"
commands = ["file.open"]
tools = ["doc_open"]
evidence = ["crates/cos/src/document/tests.rs::damaged_xref_is_reconstructed", "crates/cos/src/parser.rs::indirect_stream_with_wrong_length_recovers", "crates/cos/src/document/tests.rs::self_referential_length_does_not_overflow", "crates/engine/src/tests.rs::a_repaired_file_is_rewritten_by_save_even_without_edits", "crates/automation/tests/it/automation.rs::saving_a_repaired_file_puts_the_repair_on_disk", "crates/engine/src/tests.rs::a_signed_repaired_file_keeps_its_bytes_when_saved_without_edits", "crates/cos/src/document/tests.rs::a_table_numbered_from_1_that_begins_with_object_0_is_read_from_0", "crates/render/src/raster/tests.rs::an_update_cut_off_before_its_trailer_shows_its_pages_as_the_model_reads_them"]
notes = "Save and doc_save write a reconstructed file in full even when nothing was edited, so the repair reaches the disk and the saved file opens without one (#1937); a signed one keeps its bytes, so its signatures stay valid. A repair does not mark the document as having unsaved changes, so closing it does not offer to save the repaired file. A classic table numbered 1 n that begins with object 0's free entry is read from 0 (#2676) and logged. A last update cut off before its trailer (objects after a last `startxref` more than 4 KiB from the end) is rebuilt from object headers by the renderer as by the document model, so both show its latest objects."
evidence = ["crates/cos/src/document/tests.rs::damaged_xref_is_reconstructed", "crates/cos/src/parser.rs::indirect_stream_with_wrong_length_recovers", "crates/cos/src/document/tests.rs::self_referential_length_does_not_overflow", "crates/engine/src/tests.rs::a_repaired_file_is_rewritten_by_save_even_without_edits", "crates/automation/tests/it/automation.rs::saving_a_repaired_file_puts_the_repair_on_disk", "crates/engine/src/tests.rs::a_signed_repaired_file_keeps_its_bytes_when_saved_without_edits", "crates/cos/src/document/tests.rs::a_table_numbered_from_1_that_begins_with_object_0_is_read_from_0", "crates/render/src/raster/tests.rs::an_update_cut_off_before_its_trailer_shows_its_pages_as_the_model_reads_them", "crates/cos/src/document/tests.rs::an_update_without_prev_is_rebuilt_with_its_page_tree_and_a_repair_note", "crates/render/src/inspect/core.rs::an_update_without_prev_shows_the_page_tree_and_says_it_was_rebuilt", "crates/cos/src/document/tests.rs::a_hybrid_update_without_prev_is_rebuilt_too", "crates/render/src/inspect/core.rs::a_hybrid_update_without_prev_is_rebuilt_as_the_document_model_rebuilds_it"]
notes = "Save and doc_save write a reconstructed file in full even when nothing was edited, so the repair reaches the disk and the saved file opens without one (#1937); a signed one keeps its bytes, so its signatures stay valid. A repair does not mark the document as having unsaved changes, so closing it does not offer to save the repaired file. A classic table numbered 1 n that begins with object 0's free entry is read from 0 (#2676) and logged. A last update cut off before its trailer (objects after a last `startxref` more than 4 KiB from the end) is rebuilt from object headers by the renderer as by the document model, so both show its latest objects. A file whose last update has no /Prev (ISO 32000-2 §7.5.6, §7.5.8.2), so that its page tree is cut off the chain, (a hybrid section's /XRefStm stream counts as part of the same update) is rebuilt from its object headers by the document model and the renderer alike, with a repair note and an open warning (the signed PDFBOX-2720 and PDFBOX-2942 files)."
[[feature]]
id = "core.malformed-input-safety"