forked from OSchip/llvm-project
5df6b94381
The ObjCGenerics checker warns on a cast when there is no subtyping relationship between the tracked type of the value and the destination type of the cast. It does this even if the cast was explicitly written. This means the user can't write an explicit cast to silence the diagnostic. This commit treats explicit casts involving generic types as an indication from the programmer that the Objective-C type system is not rich enough to express the needed invariant. On explicit casts, the checker now removes any existing information inferred about the type arguments. Further, it no longer assumes the casted-to specialized type because the invariant the programmer specifies in the cast may only hold at a particular program point and not later ones. This prevents a suppressing cast from requiring a cascade of casts down the line. rdar://problem/33603303 Differential Revision: https://reviews.llvm.org/D39711 llvm-svn: 318054 |
||
|---|---|---|
| .. | ||
| INPUTS | ||
| bindings | ||
| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| runtime | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| www | ||
| .arcconfig | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| INSTALL.txt | ||
| LICENSE.TXT | ||
| ModuleInfo.txt | ||
| NOTES.txt | ||
| README.txt | ||
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/