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11641 Commits

Author SHA1 Message Date
Garret Rieger 2f50283cd3 [subset] Begin implementing ValueRecord optimization: 
remove value records which have a zero value.
 2021-04-23 18:50:33 -07:00
Garret Rieger 5df7c668ba [subset] In SinglePosFormat1 serialize only 1 value record. 
Previously one record per glyph in the subset was serialized.
 2021-04-23 18:50:33 -07:00
Garret Rieger 92757f6809 [subset] Don't drop anchor device tables when dropping hints. These may contain variation data. 
Update subseting expected files to match latest version of fontTools.
 2021-04-23 18:50:33 -07:00
Garret Rieger 6fddc2bbf9 [subset] subset layout tables (G*) by default. 2021-04-22 15:08:49 -07:00
Garret Rieger 425ba1f4ab [subset] fixes infinite loop in hb_set_get_max(). 
Fixes https://oss-fuzz.com/testcase-detail/5363902507515904
 2021-04-20 13:18:07 -06:00
Garret Rieger ec4321068b [subset] fix infinite loop caused by alloc failure in repacker. 
Fixes: https://oss-fuzz.com/testcase-detail/5609112151916544.
 2021-04-20 13:18:07 -06:00
Garret Rieger 0e845d973e [subset] fix memory leak in repacker caused by failed alloc. 
Fixes: https://oss-fuzz.com/testcase-detail/5616763250278400.
 2021-04-20 13:18:07 -06:00
Garret Rieger 3fb62cdc14 [subset] fail on offset overflow in tables that we don't repack. 
Fixes: https://oss-fuzz.com/testcase-detail/5229304507138048
 2021-04-19 17:01:05 -06:00
Behdad Esfahbod 19e096aa97
Merge pull request #2067 from harfbuzz/null-size 
Avoid undefined-behavior, another try
 2021-04-16 14:35:04 -06:00
Behdad Esfahbod ed2ee8a8c2 Revert "Disable -Wunused-macros under GCC" 
This reverts commit 1b1413246b.

Err. It wasn't working. We already have that disabled in the files it
is warning about. Doesn't work.
 2021-04-16 13:53:43 -06:00
Behdad Esfahbod 47cbf8f2c4 [test] Silence more compiler warnings 2021-04-16 13:32:02 -06:00
Behdad Esfahbod 1b1413246b Disable -Wunused-macros under GCC 
Since the pragram in hb-ot-shape-complex-indic-table.cc didn't seem to
silence GCC, eg:

../../src/hb-ot-shape-complex-indic-table.cc:55: warning: macro "ISC_TL" is not used [-Wunused-macros]
   55 | #define ISC_TL   INDIC_SYLLABIC_CATEGORY_TONE_LETTER                 /*    7 chars; Tone_Letter */

disable it at compiler level.
 2021-04-16 13:32:02 -06:00
Behdad Esfahbod 23a28f5ad0 Avoid undefined-behavior 
If a struct had (because it's a union) sizeof that is larger than the null_size,
we were providing only null_size bytes for its Null object. We know we'd never
access beyond that, but is undefined-behavior nonetheless according to the
standard.

The alternative fix would have required use of flexible-arrays, which are not
standard and have their own issues in various compiler. We've discussed that
extensively in the follow Mozilla issue (currently locked; I've asked that it
be opened):

  https://bugzilla.mozilla.org/show_bug.cgi?id=1577584

Part of
https://github.com/harfbuzz/harfbuzz/pull/2067
 2021-04-16 13:23:25 -06:00
Behdad Esfahbod 499248c533 [blob] Use min_size, instead of null_size in .as<T>() 
Part of https://github.com/harfbuzz/harfbuzz/pull/2067
 2021-04-16 13:14:48 -06:00
Khaled Hosny a4fb5da984 [ci] Enable DirectWrite in win32 tarballs 2021-04-16 09:38:44 -06:00
Khaled Hosny f2240d12c2 [ci] Use -j2 for make and ninja in distcheck job 
Lets see if this makes it faster without crashing gcc.
 2021-04-15 18:47:51 -06:00
Khaled Hosny f5c922b709 [ci] Try to stop distcheck job from crashing gcc 2021-04-15 18:47:51 -06:00
Khaled Hosny e116058bba [directwrite] Use correct UTF-16 string length 
Fixes https://github.com/harfbuzz/harfbuzz/issues/2474
 2021-04-15 09:30:40 -06:00
Ben Denckla 668acff1f0 similarly improve comments on Hebrew ccc 18 & 19 
Should have committed this along with commit 9658435a25 but forgot.
 2021-04-13 11:01:22 -06:00
Ben Denckla 43d955207b improve comments on Hebrew ccc 18 & 19 
improve comments to reflect that:
ccc 18 includes both "flavors" of qamats: qamats [gadol] and qamats qatan
ccc 19 includes both "flavors" of holam: holam [not haser for vav] and holam haser for vav
This code and its comments may have been written before these code points were added to Unicode.
I.e. originally, these comments may have been complete, but they may have become incomplete in the meantime.
 2021-04-13 11:01:22 -06:00
Ambient Lighter 4cc4cd3b24
[docs] Fix spelling typo (#2945) 2021-04-10 14:11:23 +03:00
Qunxin Liu 9dc9f0385d [subset] fix for fuzzer testcase: https://oss-fuzz.com/testcase-detail/5858518134554624 2021-04-09 11:07:28 -06:00
Qunxin Liu 430a67ceab [subset] COLRv1 struct definitions 2021-04-08 11:27:01 -06:00
Qunxin Liu 553ffaf682 [subset] fix for fuzzer testcase: https://oss-fuzz.com/testcase-detail/6382598554255360 
avoid writing to null pointer
 2021-04-08 09:54:48 -06:00
Qunxin Liu 4af5dacedc [subset] add fuzzer testcase 2021-04-07 13:02:04 -06:00
Garret Rieger 8b686afeb5 [subset] add unlikely(). 2021-04-06 12:34:44 -06:00
Garret Rieger 64122b5a44 [subset] don't visit lookup if covered glyph set has failed. 
If covered glyph set is in error then the same lookup can be recursed into repeatedly potentially causing a fuzzer timeout. Fixes: https://oss-fuzz.com/testcase-detail/5416421032067072.
 2021-04-06 12:34:44 -06:00
Garret Rieger 4ec18c85e6 [subset] add subsetting tests with drop hints and layout subsetting enabled. 2021-04-06 11:50:44 -06:00
Garret Rieger 6f98a8ed46 [subset] Anchor should only use format 1 when hints are dropped. 
Refactor Anchor to have a subset method instead of copy. This also allows
use to use serialize_subset in several places which simplifies calculating
offset bases.
 2021-04-06 11:50:44 -06:00
Garret Rieger 71d6d15600 [subset] clamp distance to prevent shifting outside of the limits of int64. 
Fixes https://oss-fuzz.com/testcase-detail/4961171477233664.
 2021-04-06 11:48:39 -06:00
Khaled Hosny fcacd17748 [ot] Update _hb_glyph_info_is_default_ignorable_and_not_hidden() 
Used _hb_glyph_info_substituted() similar to the change made to
_hb_glyph_info_is_default_ignorable() in
7686ff854b.
 2021-04-06 11:47:06 -06:00
Garret Rieger 596f4258d0 [subset] copy Lookup::markFilteringSet when subseting. 2021-04-02 15:33:52 -06:00
Behdad Esfahbod d3a2f999e4 Fix up build 
This was left out; oops.
 2021-04-02 08:33:03 -06:00
Garret Rieger c35d786397 [subset] never drop the 'pref' feature. 
Never ever drop feature 'pref', even if it's empty. Harfbuzz uses it to choose the shaper for Khmer.
 2021-04-01 16:27:35 -06:00
Behdad Esfahbod 092094f705 Use as_array() and range loops in a few places 2021-04-01 16:02:54 -06:00
Garret Rieger 55e7f3fe32 [subset] Match FeatureVariationRecord dropping from fontTools. 
Only drop records with no matching features that are at the end of the list. See: cab7d13dc0
 2021-04-01 15:26:02 -06:00
Garret Rieger f0c78e0282 [subset] don't drop features referenced in a feature variation substitution. 2021-04-01 15:26:02 -06:00
Garret Rieger dae99b7769 [subset] don't keep FeatureVariationRecord's with no subsittutions. 2021-04-01 15:26:02 -06:00
Garret Rieger 85b0728783 Add full variable font subsetting test. 2021-04-01 15:26:02 -06:00
Behdad Esfahbod c4b49075f6 Update CMakeLists.txt 
Keep the warning.
 2021-04-01 11:47:33 -06:00
Timo Suoranta 9945f32746 Test fix to export target include directories 2021-04-01 11:47:33 -06:00
Garret Rieger b10741ca7f [subset] when closing glyphs in context lookups don't use a current glyph set if a lookup is already applied. 2021-03-31 21:03:33 -06:00
Garret Rieger 2773d05740 [subset] Add a test case using NotoNastaliqUrdu. 2021-03-31 21:03:33 -06:00
Garret Rieger 8ef4257dc8 [sanitize] change max ops to track number of bytes processed. 
Counting bytes as the operations is likely to be a better proxy for how
much work processing the table will cost vs. the current approach of
counting the number of sub-objects.

This should allow checks for max features, max scripts, etc. to be removed.

I tested this change against the full collection of fonts at https://github.com/google/fonts
and a max ops factor of 3 was sufficient to successfully sanitize all of them.
 2021-03-31 19:03:30 -06:00
Behdad Esfahbod 70110f6aaa Modify OffsetTo<>::sanitize() overflow check 
The code in question was introduced in 70eb2ff682.
Rewrite it to not call sanitizer check_range() as we want to use
check_range() for byte accounting.

Part of https://github.com/harfbuzz/harfbuzz/pull/2923
 2021-03-31 17:04:02 -06:00
Behdad Esfahbod 4dba749d83 Add SortedArray{16,32}Of<> 2021-03-31 16:09:39 -06:00
Behdad Esfahbod 5639e253f9 Add Array16Of<> 2021-03-31 16:04:43 -06:00
Behdad Esfahbod 2520a82df9 s/LArrayOf/Array32Of/g 2021-03-31 15:41:54 -06:00
Behdad Esfahbod 5efe360986 Rename (Unsized)OffsetListOf 2021-03-31 15:33:22 -06:00
Behdad Esfahbod 6c4e0491d7 s/OffsetArrayOf/Array16OfOffset16To/g 2021-03-31 15:31:32 -06:00