llvm-project/clang
Jamie Schmeiser dfc1e31d49 Produce warning for performing pointer arithmetic on a null pointer.
Summary:
Test and produce warning for subtracting a pointer from null or subtracting
null from a pointer.  Reuse existing warning that this is undefined
behaviour.  Also add unit test for both warnings.

Reformat to satisfy clang-format.

Respond to review comments:  add additional test.

Respond to review comments:  Do not issue warning for nullptr - nullptr
in C++.

Fix indenting to satisfy clang-format.

Respond to review comments:  Add C++ tests.

Author: Jamie Schmeiser <schmeise@ca.ibm.com>
Reviewed By: efriedma (Eli Friedman), nickdesaulniers (Nick Desaulniers)
Differential Revision: https://reviews.llvm.org/D98798
2021-05-11 11:29:50 -04:00
..
INPUTS
bindings
cmake [Fuchsia][CMake] Update OSX deployment target 2021-05-06 12:06:16 -07:00
docs [OpenCL] [NFC] Fixed underline being too short in rst 2021-05-11 09:45:28 +01:00
examples
include [OpenCL] Allow use of double type without extension pragma. 2021-05-11 12:54:38 +01:00
lib Produce warning for performing pointer arithmetic on a null pointer. 2021-05-11 11:29:50 -04:00
runtime
test Produce warning for performing pointer arithmetic on a null pointer. 2021-05-11 11:29:50 -04:00
tools [amdgpu-arch] Guard hsa.h with __has_include 2021-05-10 07:33:30 +00:00
unittests Make `hasTypeLoc` matcher support more node types. 2021-05-08 00:35:22 +01:00
utils [RISCV] Consider scalar types for required extensions. 2021-05-08 04:06:45 +08:00
www Added a faster method to clone llvm project [DOCS] 2021-05-05 21:37:53 +05:30
.clang-format
.clang-tidy
.gitignore Remove .gitignore entries not relevant in the monorepo. 2021-04-07 12:25:02 -07:00
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/