Duncan P. N. Exon Smith 839cd13b65 Lex: Never overflow the file in HeaderMap::lookupFilename() ... If a header map file is corrupt, the strings in the string table may not be null-terminated. The logic here previously relied on `MemoryBuffer` always being null-terminated, but this isn't actually guaranteed by the class AFAICT. Moreover, we're seeing a lot of crash traces at calls to `strlen()` inside of `lookupFilename()`, so something is going wrong there. Instead, use `strnlen()` to get the length, and check for corruption. Also remove code paths that could call `StringRef(nullptr)`. r261459 made these rather obvious (although they'd been there all along). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@261461 91177308-0d34-0410-b5e6-96231b3b80d8		2016-02-21 00:14:36 +00:00
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CMakeLists.txt	Lex: Add some unit tests for corrupt header maps	2016-02-20 20:39:51 +00:00
HeaderMapTest.cpp	Lex: Never overflow the file in HeaderMap::lookupFilename()	2016-02-21 00:14:36 +00:00
LexerTest.cpp	Fix -Wextra-semi warnings.	2015-07-22 20:46:26 +00:00
PPCallbacksTest.cpp	[VFS] Use VFS instead of virtual files in PPCallbacks test.	2015-10-08 14:20:14 +00:00
PPConditionalDirectiveRecordTest.cpp	Fix -Wextra-semi warnings.	2015-07-22 20:46:26 +00:00