llvm-project/clang
Artem Dergachev db65f969f2 [analyzer] CStringChecker: pr34460: Avoid a crash when a cast is not modeled.
The checker used to crash when a mempcpy's length argument is symbolic. In this
case the cast from 'void *' to 'char *' failed because the respective
ElementRegion that represents cast is hard to add on top of the existing
ElementRegion that represents the offset to the last copied byte, while
preseving a sane memory region structure.

Additionally, a few test cases are added (to casts.c) which demonstrate problems
caused by existing sloppy work we do with multi-layer ElementRegions. If said
cast would be modeled properly in the future, these tests would need to be
taken into account.

Differential Revision: https://reviews.llvm.org/D38797

llvm-svn: 315742
2017-10-13 20:11:00 +00:00
..
INPUTS
bindings bindings: expose Linkage to the python bindings 2017-09-22 18:35:09 +00:00
cmake [clang-fuzzer] Build with newer protobuf-mutator. 2017-10-11 20:45:10 +00:00
docs Revert "[Sema] Diagnose tautological comparison with type's min/max values" 2017-10-12 22:03:20 +00:00
examples
include Basic: adjust attributes on `nan` LIBBUILTINs 2017-10-13 20:07:30 +00:00
lib [analyzer] CStringChecker: pr34460: Avoid a crash when a cast is not modeled. 2017-10-13 20:11:00 +00:00
runtime Resubmit "[lit] Force site configs to run before source-tree configs" 2017-09-15 22:10:46 +00:00
test [analyzer] CStringChecker: pr34460: Avoid a crash when a cast is not modeled. 2017-10-13 20:11:00 +00:00
tools [clang-refactor] Apply source replacements 2017-10-13 19:42:05 +00:00
unittests Revert "[ADT] Make Twine's copy constructor private." 2017-10-11 23:54:34 +00:00
utils [clang] Enable clang build with LLVM_BUILD_INSTRUMENTED without setting LLVM_PROFTDATA 2017-10-13 03:21:39 +00:00
www Typos in tutorial 2017-10-13 00:31:07 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt Don't search libxml2 if using msan. LLVM already has similar check. 2017-09-02 03:53:42 +00:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT
ModuleInfo.txt
NOTES.txt
README.txt Test commit access in clang. 2017-09-03 15:29:38 +00:00

README.txt

//===----------------------------------------------------------------------===//
// C Language Family Front-end
//===----------------------------------------------------------------------===//

Welcome to Clang.  This is a compiler front-end for the C family of languages
(C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM
compiler infrastructure project.

Unlike many other compiler frontends, Clang is useful for a number of things
beyond just compiling code: we intend for Clang to be host to a number of
different source-level tools.  One example of this is the Clang Static Analyzer.

If you're interested in more (including how to build Clang) it is best to read
the relevant web sites.  Here are some pointers:

Information on Clang:              http://clang.llvm.org/
Building and using Clang:          http://clang.llvm.org/get_started.html
Clang Static Analyzer:             http://clang-analyzer.llvm.org/
Information on the LLVM project:   http://llvm.org/

If you have questions or comments about Clang, a great place to discuss them is
on the Clang development mailing list:
  http://lists.llvm.org/mailman/listinfo/cfe-dev

If you find a bug in Clang, please file it in the LLVM bug tracker:
  http://llvm.org/bugs/