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Author SHA1 Message Date
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 
Fixes https://oss-fuzz.com/testcase-detail/5234369031176192
 2022-07-26 12:31:40 -06:00
Behdad Esfahbod
4cb83967aa [subset/ClassDefFormat2] Fix timeout 
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 
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 
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 
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. 
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 
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 
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 
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. 
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. 
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 
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 
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 
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 
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() 
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 
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. 
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 
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. 
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. 
Fixes https://oss-fuzz.com/testcase-detail/5205038086094848
 2021-12-14 15:57:48 -07:00
Khaled Hosny
69d8f27c69 [meson] Require 0.55.0 
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. 
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 
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
Qunxin Liu
794b00db4b [subset] fuzzer fix: https://oss-fuzz.com/testcase-detail/6616166961905664 2021-09-29 10:29:06 -06:00
Garret Rieger
74f96d9d4b [repacker] fix heap use after free in repacker. 
Don't store a reference to the link in overflow records as the link object may be freed if the sorted graph vector is resized.
 2021-09-19 09:06:17 -06:00
Garret Rieger
fb07f8f876 During subset input creation check for set alloc failures and fail if encountered. 2021-08-24 10:59:14 -06:00
Garret Rieger
dc31920bbe Don't serialize null offsets in CPAL. 
Fixes https://oss-fuzz.com/testcase-detail/5443213648330752
 2021-08-18 16:52:45 -06:00
Garret Rieger
c0f3af91b8 [subset] speed up add_gid_and_children and adjust op limit. 
Fix for fuzzer timeout: https://oss-fuzz.com/testcase-detail/5001604901240832.

- Operation limit is per glyph, so 100,000 should still be far more than needed.
- Switches from for(...) to while(...) loop for iteration. for(...) calls it.end() which in this case triggers a complete iteration.
- Cache CompositeGlyph size in the iterator to avoid needing to recalculate it.
 2021-08-12 14:50:42 -06:00
Garret Rieger
c08f1b8903 [map] fix incorrect population count in hash map. 
If the same key was set twice the population was being incorrectly incremented.
 2021-08-10 14:00:55 -06:00
Garret Rieger
8c0c217b5a [subset] fail reference blob in face builder if allocation for table sorting fails. 
Fixes https://oss-fuzz.com/testcase-detail/5041767803125760
 2021-08-06 15:54:41 -06:00
Behdad Esfahbod
5086e10538 [test] Add failing fuzzer test case 
From https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36236
https://oss-fuzz.com/testcase-detail/5061207689134080
 2021-08-04 11:55:53 -06:00
Garret Rieger
f9d8e4a976 [subset] switch ..._set_flags to not take a mask. 2021-07-29 18:30:27 -07:00
Garret Rieger
3d534b146c [subset] convert subset input flags into bit flags. 
Store the flags in a bit set. Updates the public api to work with the bit set directly.
 2021-07-29 18:02:34 -07:00