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
19e096aa97
Merge pull request #2067 from harfbuzz/null-size
...
Avoid undefined-behavior, another try
2021-04-16 14:35:04 -06:00
ed2ee8a8c2
Revert "Disable -Wunused-macros under GCC"
...
This reverts commit 1b1413246b
2021-04-16 13:53:43 -06:00
47cbf8f2c4
[test] Silence more compiler warnings
2021-04-16 13:32:02 -06:00
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
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
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
a4fb5da984
[ci] Enable DirectWrite in win32 tarballs
2021-04-16 09:38:44 -06:00
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
f5c922b709
[ci] Try to stop distcheck job from crashing gcc
2021-04-15 18:47:51 -06:00
e116058bba
[directwrite] Use correct UTF-16 string length
...
Fixes https://github.com/harfbuzz/harfbuzz/issues/2474
2021-04-15 09:30:40 -06:00
668acff1f0
similarly improve comments on Hebrew ccc 18 & 19
...
Should have committed this along with commit 9658435a25
2021-04-13 11:01:22 -06:00
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
4cc4cd3b24
[docs] Fix spelling typo ( #2945 )
2021-04-10 14:11:23 +03:00
9dc9f0385d
[subset] fix for fuzzer testcase: https://oss-fuzz.com/testcase-detail/5858518134554624
2021-04-09 11:07:28 -06:00
430a67ceab
[subset] COLRv1 struct definitions
2021-04-08 11:27:01 -06:00
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
4af5dacedc
[subset] add fuzzer testcase
2021-04-07 13:02:04 -06:00
8b686afeb5
[subset] add unlikely().
2021-04-06 12:34:44 -06:00
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
4ec18c85e6
[subset] add subsetting tests with drop hints and layout subsetting enabled.
2021-04-06 11:50:44 -06:00
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
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
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
596f4258d0
[subset] copy Lookup::markFilteringSet when subseting.
2021-04-02 15:33:52 -06:00
d3a2f999e4
Fix up build
...
This was left out; oops.
2021-04-02 08:33:03 -06:00
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
092094f705
Use as_array() and range loops in a few places
2021-04-01 16:02:54 -06:00
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
f0c78e0282
[subset] don't drop features referenced in a feature variation substitution.
2021-04-01 15:26:02 -06:00
dae99b7769
[subset] don't keep FeatureVariationRecord's with no subsittutions.
2021-04-01 15:26:02 -06:00
85b0728783
Add full variable font subsetting test.
2021-04-01 15:26:02 -06:00
c4b49075f6
Update CMakeLists.txt
...
Keep the warning.
2021-04-01 11:47:33 -06:00
9945f32746
Test fix to export target include directories
2021-04-01 11:47:33 -06:00
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
2773d05740
[subset] Add a test case using NotoNastaliqUrdu.
2021-03-31 21:03:33 -06:00
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
70110f6aaa
Modify OffsetTo<>::sanitize() overflow check
...
The code in question was introduced in 70eb2ff682https://github.com/harfbuzz/harfbuzz/pull/2923
2021-03-31 17:04:02 -06:00
4dba749d83
Add SortedArray{16,32}Of<>
2021-03-31 16:09:39 -06:00
5639e253f9
Add Array16Of<>
2021-03-31 16:04:43 -06:00
2520a82df9
s/LArrayOf/Array32Of/g
2021-03-31 15:41:54 -06:00
5efe360986
Rename (Unsized)OffsetListOf
2021-03-31 15:33:22 -06:00
6c4e0491d7
s/OffsetArrayOf/Array16OfOffset16To/g
2021-03-31 15:31:32 -06:00
1fc6b69aed
s/UnsizedOffsetArrayOf/UnsizedArray16OfOffsetTo/g
2021-03-31 15:30:35 -06:00
2a54c9f744
.
2021-03-31 15:26:42 -06:00
c539afb08b
[CFF] Use NNOffsetTo<> instead of OffsetTo<>
...
I'm pretty sure that's what is intended.
2021-03-31 13:28:25 -06:00
9b4b58493b
Fixup for recent OffsetTo<> changes
2021-03-31 13:27:21 -06:00
ad28f973f3
Rename offset types to be explicit about their size
...
Add Offset16To<>, Offset24To<>, and Offset32To<> for most use-cases.
2021-03-31 13:00:07 -06:00
c5c13006a1
[subset] fix memory leaks found in https://oss-fuzz.com/testcase-detail/5179935334465536
2021-03-31 12:37:45 -06:00
bd2950b393
Make VariationStore::get_delta(outer, inner) private
2021-03-31 11:36:36 -06:00
Garret Rieger
Behdad Esfahbod
Khaled Hosny
Ben Denckla
Ambient Lighter
Qunxin Liu
Timo Suoranta