Garret Rieger
554ed06fac
[repacker] add cycle detection to the graph sort.
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This allows us to bail early if the graph is not acyclic.
2022-12-01 21:52:37 +00:00
Garret Rieger
9e99d08470
[repacker] validate link widths during repacker setup.
2022-12-01 20:17:41 +00:00
Garret Rieger
edf7a29595
[repacker] Validate link positions before running the repacker.
2022-12-01 20:17:41 +00:00
Garret Rieger
88d437525f
[repacker] add test for repacker fuzzer.
2022-12-01 20:17:40 +00:00
Garret Rieger
6627a1ab45
[repacker] Add a initial seed for the fuzzer repacker.
2022-12-01 20:17:40 +00:00
Garret Rieger
deca30b268
[repacker] get repacker fuzzer working.
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Additionally add helper method that allows a graph to be saved as a fuzzer seed.
2022-12-01 20:17:40 +00:00
Garret Rieger
261a605f9c
[repacker] verify graph is a dag before using the fuzzer input.
2022-12-01 20:17:40 +00:00
Garret Rieger
985b19f678
[repacker] begin implementing a fuzzer for the repacker api.
2022-12-01 20:17:39 +00:00
Garret Rieger
dd1ba328a8
[repacker] fix fuzzer timeout.
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For https://oss-fuzz.com/testcase-detail/5845846876356608 . Only process the set of unique overflows.
2022-11-21 16:24:48 -07:00
Behdad Esfahbod
e854739b2d
[fuzzing] Add test font for previous commit
2022-10-26 13:12:56 -06:00
Qunxin Liu
7fde6ab025
fuzzer fix: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49790
2022-08-05 15:10:31 -06:00
Khaled Hosny
afe6629b2f
Fix make dist
2022-08-03 19:56:29 +02:00
Behdad Esfahbod
e68e874da6
Update test/fuzzing/README
2022-08-03 11:31:34 -06:00
Behdad Esfahbod
bdbb8c297e
Add test for previous commit
2022-07-29 12:04:28 -06:00
Behdad Esfahbod
e2cc34e190
[subset/GPOS] Fix a fuzzer timeout test
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Fixes https://oss-fuzz.com/testcase-detail/5234369031176192
2022-07-26 12:31:40 -06:00
Behdad Esfahbod
4cb83967aa
[subset/ClassDefFormat2] Fix timeout
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Fixes https://oss-fuzz.com/testcase-detail/5417800474165248
2022-07-23 11:00:20 -06:00
Behdad Esfahbod
32c85b8c8c
[avar2] Fix mapping when coords length don't match
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Ouch.
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49407
2022-07-23 10:50:26 -06:00
Behdad Esfahbod
9eab3ac72d
[CoverageFormat2] Remove hand-written loop
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While on a fuzzer-found test case (added) that loop was faster,
on real fonts, including NotoNastaliq in our benchmark, it was
actually slower, which intuitively I would have expected.
Still no idea why on that fuzzer case it's faster though. :(
2022-07-21 12:36:53 -06:00
Behdad Esfahbod
3c84aa8416
[cff] Add a max work counter
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Set to 10,000 per interpretation right now.
Fixes https://github.com/harfbuzz/harfbuzz/issues/3700
Fixes https://oss-fuzz.com/testcase-detail/5667125715927040
2022-07-18 13:57:59 -06:00
Behdad Esfahbod
b8c7c0a0e6
[fuzzer] In 50% of runs don't fail the allocator
2022-07-01 15:25:09 -06:00
Garret Rieger
311413f16b
[subset] Fix fuzzer issue.
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Fixes https://oss-fuzz.com/testcase-detail/5693568490012672 . new_index should be set from new_index2 when the entry is present in the map.
2022-06-14 17:49:13 +01:00
Behdad Esfahbod
62e803b361
[sbix] Limit glyph extents
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Fixes https://github.com/harfbuzz/harfbuzz/issues/3557
2022-06-01 07:39:20 -06:00
Behdad Esfahbod
5a058ba158
[shape-fuzzer] Add commented out more buffer-verify option
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Those currently fail and I've been unable to debug them.
I tried two, passing them to hb-shape doesn't reproduce the failure. :(
2022-06-01 04:53:50 -06:00
Behdad Esfahbod
189f65344a
[fuzz-shape] Verify shape output
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Let the fuzzers loose on shape verify.
2022-06-01 04:53:50 -06:00
Garret Rieger
8f9f0c494b
[subset] Enforce cmap12 group ordering constraints in collect_mapping.
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Fixes fuzzer issue: https://oss-fuzz.com/testcase-detail/6365271012540416
2022-05-10 12:15:09 -06:00
Garret Rieger
b051f3fa83
[subset] Fix cpal subsetting when there are partial palette overlaps.
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The existing code doesn't correctly handle the case where palettes partially overlap in the color record array. This changes the subsetting to only share entries in the color record array when palettes have the same first color index. Partially overlapping palettes will be converted to disjoint segments in the color record array.
Updates one of the color tests to use multiple palettes.
Also fixes fuzzer: https://oss-fuzz.com/testcase-detail/5568200165687296 .
2022-05-09 12:25:05 -06:00
Behdad Esfahbod
ca8a0f3ea3
[gvar] Protect against out-of-range access
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47281
Fixes https://oss-fuzz.com/testcase-detail/5508865908670464
2022-05-06 11:54:38 -06:00
Behdad Esfahbod
a665e29ed7
[use] Avoid O(n^2) in the machine
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Fixes https://github.com/harfbuzz/harfbuzz/issues/3502
2022-03-25 15:17:55 -06:00
Behdad Esfahbod
03085132ba
[buffer] Fix out-buffer under memory-alloc failure
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This was broken in July refactoring of the buffer, and exposed to
ReverseChainSingleSubstFormat1 in 3807061d63
Fixes:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38800
https://bugs.chromium.org/p/chromium/issues/detail?id=1303552
2022-03-21 18:09:06 -06:00
Behdad Esfahbod
151f205819
[draw] Emit move_to immediately, like other operators
2022-02-13 13:21:15 -06:00
Behdad Esfahbod
f1a9a9ccaf
[draw-state] Pass state down to callbacks
2022-02-13 13:21:14 -06:00
Behdad Esfahbod
1740916ede
[draw] Remove check for no-op
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This is unnecessary overhead. Up to rasterizers to handle this. Plus,
this throws off point-numbers in uses that rely on it.
Disabled one test that broke with this.
2022-02-13 13:21:14 -06:00
Behdad Esfahbod
8b4f429000
[draw] Virtualize hb_font_draw_glyph() into hb_font_get_glyph_shape()
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To be implemented in hb-ft.
2022-02-13 13:21:14 -06:00
Behdad Esfahbod
2bed4f46fb
[draw] Fix draw signatures
2022-02-13 13:21:14 -06:00
Behdad Esfahbod
08e1096609
[draw-fuzzer] Fix signatures
2022-02-13 13:21:14 -06:00
Behdad Esfahbod
e0ac6c587b
Remove remaining traces of HB_EXPERIMENTAL_API
2022-02-13 13:21:14 -06:00
Behdad Esfahbod
b263371b09
Merge pull request #3398 from harfbuzz/buffer-verify
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Add HB_BUFFER_FLAG_VERIFY
2022-02-12 15:06:47 -06:00
Behdad Esfahbod
af407dd24d
Add a fuzzer font
2022-02-12 14:22:35 -06:00
Garret Rieger
4e2f409bce
[subset] Don't hold references to members of the active_glyph_stack.
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These references may get invalidated after the vector for the stack is resized. Fixes: https://oss-fuzz.com/testcase-detail/5422577634377728
2022-01-31 22:58:53 +02:00
Behdad Esfahbod
61856359cb
[fuzz] Disable verification for now.
2022-01-28 14:07:29 -07:00
Behdad Esfahbod
6596e42d16
[fuzz] Verify shape results
2022-01-28 13:55:24 -07:00
luz paz
e2e305066a
Fix various typos
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Found via `codespell -q 3 -S ./perf/texts -L actualy,ba,beng,fo,gir,inout,nd,ot,pres,ro,te,teh,timne`
2022-01-16 05:39:03 -08:00
Garret Rieger
87496bf63e
[subset] fix fuzzer timeout if visisted_paint goes into error.
2022-01-13 11:08:24 -08:00
Garret Rieger
067f90a820
[subset] Fix for fuzzer timeout.
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Fixes https://oss-fuzz.com/testcase-detail/5549945449480192
In prune_langsys: move LangSys visited check up before any work is done for a LangSys. In this particular case the compare() method is responsible for the majority of the time spent and wasn't being guarded with a visisted check.
2021-12-14 17:34:21 -07:00
Garret Rieger
c4573c2ec7
[repacker] don't infinite loop if visited or roots is in error.
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Fixes https://oss-fuzz.com/testcase-detail/5205038086094848
2021-12-14 15:57:48 -07:00
Khaled Hosny
69d8f27c69
[meson] Require 0.55.0
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We implicitly require it for building ragel subproject. This new version
requirement should satisfied in both Fedora 33 and Debian bullseye, and
not be too cutting edge for us.
2021-11-22 03:11:36 +02:00
Garret Rieger
ace98cc65f
[subset] Only sanitize recursion depth in COLR.
2021-11-10 10:34:46 -07:00
Garret Rieger
f51b48c8e7
[subset] Fix fuzzer found memory leak.
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Happens because an insert into a map with an invalid key reports successful, but this causes the set being inserted to be lost.
2021-11-02 17:00:07 -07:00
Qunxin Liu
0a7563a53f
[subset] fuzzer fix: https://oss-fuzz.com/testcase?key=6254792024915968
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Make sure input is valid, each gid has a corresponding offset value in
the map
2021-11-02 15:25:18 -07:00
Qunxin Liu
85deddb16e
[subset] fuzzer fix: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40406
2021-10-27 16:16:15 -07:00