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A UBSAN warning can be triggered because the link title is an empty string:
src/inlines.c:113:20: runtime error: null pointer passed as argument 2, which is declared to never be null
which can be triggered by:
```
[f]:_
[f]
```
The length of the memcpy is zero so the NULL pointer is not dereferenced but it
is still undefined behaviour.
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This also brings the code into closer alignment with the wording
of the spec.
See jgm/CommonMark#467.
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Closes #211.
Found by google/oss-fuzz:
https://oss-fuzz.com/v2/testcase-detail/4686992824598528
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We got an array overflow in enumerated lists nested more than
10 deep with start number =/= 1.
Found by google/oss-fuzz.
https://oss-fuzz.com/v2/testcase-detail/5546760854306816
This commit also ensures that we don't try to set `enum_` counters
that aren't defined by LaTeX (generally up to enumv).
Closes #210.
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Add libFuzzer harness for oss-fuzz
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echo '[](xx:)' | ./build/src/cmark -t latex
Segmentation fault: 11
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This can be run locally with `make libFuzzer` but the harness will be
integrated into oss-fuzz for large-scale fuzzing.
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This allows AFL and libFuzzer to use the same dictionary
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Reset bytes after (possible) UTF8 proc
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See https://github.com/jgm/cmark/issues/206.
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Don't scan past an EOL.
The existing negated character classes ([^…]) are careful to always include \x00 in the characters excluded, but these . catch-alls can scan right past the terminating NUL placed at the end of the buffer by _scan_at.
As such, buffer overruns can occur.
Also, don't scan past a newline in HTML block end scanners.
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Revert "Remove normalize as an option per #190"
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E.g. cmark_node_get_url on a non-link or image.
Closes #155.
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Only ascii punctuation characters are escapable,
per the spec.
Closes #192.
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Closes #193.
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as documented!
Closes #202.
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Improve readme a bit
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Note, however, that this may not be needed at all:
the old code would have gone into an infinite loop
if the delimiter stack were not already freed.
If we can prove that the delimiter stack is empty
at this point, we could remove this; on the other hand,
it may not hurt to keep it here defensively.
Closes #189.
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Closes #188.
@nwellnhof - could you have a look and let me know if you
think this is a bad idea or could be improved?
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needed for multilib distros like Fedora
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The overflow could occur in the following condition:
the buffer ends with `\r` and the next memory address
contains `\n`.
Closes #184.
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Strong now goes inside Emph rather than the reverse,
when both scopes are possible.
The code is much simpler.
This also avoids a spec inconsistency that cmark had previously:
`***hi***` became Strong (Emph "hi")) but
`***hi****` became Emph (Strong "hi")) "*"
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* Don't double-output the link in latex-rendering.
* Prevent ligatures in dashes sensibly when rendering latex.
\- is a hyphenation, so it doesn't get displayed at all.
* Redo "Don't double-output the link in latex-rendering."
This reverts commit 8fb1f1c3c8799628141780ca5fd8d70883c1ec53
and adds the proper solution to the problem.
With commit 8fb1f1c3c double rendering is fixed, but the url isn't
escaped anymore, so I discarded the wrong copy.
We now return 0 from the function in case of a single link,
which stops processing the contents of the node.
* Add a comment about the double-rendering issue addressed in 1c0d4749451cf85a849a3cf8e41cf137789821d4
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CMake impovement
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Now you can enable/disable compilation and installation targets for
shared and static libraries via -DCMARK_SHARED=ON/OFF and
-DCMARK_STATIC=ON/OFF
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Replaced ${LIB_INSTALL_DIR} option with built-in ${LIB_SUFFIX} for installing
for 32/64-bit systems. Normally, CMake will set ${LIB_SUFFIX} automatically
for required enviroment.
If you have any issues with it, you can override this option with
-DLIB_SUFFIX=64 or -DLIB_SUFFIX="" during configuration.
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Noticed the need for this through fuzzing.
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We now use a much smaller array.
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The new "multiple of 3" rule defeats one of our optimizations.
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This reverts commit 9e643720ec903f3b448bd2589a0c02c2514805ae.
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This reverts commit c4c1d59ca29aceb1c5919908ac97d9476264fd96.
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This reverts commit 26182bb868d3da7dd8a3389729bea79d489855b7.
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