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| author | Volodymyr Sapsai <vsapsai@apple.com> | 2018-02-06 22:39:25 +0000 |
|---|---|---|
| committer | Volodymyr Sapsai <vsapsai@apple.com> | 2018-02-06 22:39:25 +0000 |
| commit | 579f0b307c19efd778d221703ea7743234113535 (patch) | |
| tree | 77c50ad6e7c6e5c1fe06431eefd0e33ef3231aa0 /llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | |
| parent | 64626b344b332c90c0f3094d79ac098cb2492832 (diff) | |
| download | llvm-579f0b307c19efd778d221703ea7743234113535.zip llvm-579f0b307c19efd778d221703ea7743234113535.tar.gz llvm-579f0b307c19efd778d221703ea7743234113535.tar.bz2 | |
[Lex] Fix handling numerical literals ending with ' and signed exponent.
For input `0'e+1` lexer tokenized as numeric constant only `0'e`. Later
NumericLiteralParser skipped 0 and ' as digits and parsed `e+1` as valid
exponent going past the end of the token. Because it didn't mark numeric
literal as having an error, it continued parsing and tried to expandUCNs
with StringRef of length -2.
The fix is not to parse exponent when we reached the end of token.
Discovered by OSS-Fuzz:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4588
rdar://problem/36076719
Reviewers: rsmith, t.p.northover
Reviewed By: rsmith
Subscribers: cfe-commits, jkorous-apple
Differential Revision: https://reviews.llvm.org/D41834
llvm-svn: 324419
Diffstat (limited to 'llvm/lib/Bitcode/Writer/BitcodeWriter.cpp')
0 files changed, 0 insertions, 0 deletions