llvm-project/clang
Jordan Rose 9503501dae [analyzer] When forced to fake a block type, do it correctly.
BlockDecl has a poor AST representation because it doesn't carry its type
with it. Instead, the containing BlockExpr has the full type. This almost
never matters for the analyzer, but if the block decl contains static
local variables we need to synthesize a region to put them in, and this
region will necessarily not have the right type.

Even /that/ doesn't matter, unless

(1) the block calls the function or method containing the block, and
(2) the value of the block expr is used in some interesting way.

In this case, we actually end up needing the type of the block region,
and it will be set to our synthesized type. It turns out we've been doing
a terrible job faking that type -- it wasn't a block pointer type at all.
This commit fixes that to at least guarantee a block pointer type, using
the signature written by the user if there is one.

This is not really a correct answer because the block region's type will
/still/ be wrong, but further efforts to make this right in the analyzer
would probably be silly. We should just change the AST.

rdar://problem/21698099

llvm-svn: 241944
2015-07-10 21:41:59 +00:00
..
INPUTS
bindings [libclang] Add functions to get information about fields. 2015-04-13 16:55:04 +00:00
cmake/modules
docs Add GCC-compatible flags -fprofile-generate and -fprofile-use. 2015-07-09 17:23:53 +00:00
examples Fixing a build bot break from r240400. 2015-06-23 13:29:33 +00:00
include Add an experimental flag -fsanitize-memory-use-after-dtor. 2015-07-10 20:07:16 +00:00
lib [analyzer] When forced to fake a block type, do it correctly. 2015-07-10 21:41:59 +00:00
runtime [UBSan] Use shared library for UBSan on OS X (Clang part). 2015-03-23 23:14:05 +00:00
test [analyzer] When forced to fake a block type, do it correctly. 2015-07-10 21:41:59 +00:00
tools Add clang_free to libclang to free memory allocated in libclang. 2015-07-09 07:53:23 +00:00
unittests Add a missing dependency to unittests/Frontend. 2015-07-10 15:47:36 +00:00
utils [Static Analyzer] Make the paths relative from the project root when generating reference results in the test suite. 2015-07-08 18:39:31 +00:00
www DR1909: Diagnose all invalid cases of a class member sharing its name with the class. 2015-07-06 01:45:27 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore [.gitignore] ignore vim swap files harder 2015-06-17 02:21:35 +00:00
CMakeLists.txt Use Clang version numbers for the Windows VERSIONINFO resource. 2015-06-12 16:33:38 +00:00
CODE_OWNERS.TXT List Alexey Bataev as code owner for Clang's OpenMP support, as discussed offline. 2015-05-12 20:29:41 +00:00
INSTALL.txt
LICENSE.TXT Update copyright year to 2015. 2015-03-12 01:36:10 +00:00
Makefile
ModuleInfo.txt
NOTES.txt
README.txt Reverting test commit. 2015-04-10 08:43:58 +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.cs.uiuc.edu/mailman/listinfo/cfe-dev

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