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Marco Elver c65186c89f [clang] Improve -Wdeclaration-after-statement 
With 118f966b46, Clang matches GCC's behaviour and allows enabling
-Wdeclaration-after-statement with C99 and later.

However, the check for mixing declarations and code is not a constant time
algorithm, and therefore should be guarded with Diags.isIgnored().

Furthermore, improve test coverage with: non-pedantic C89 with the
warning; C11 with the warning; and when using -Wall.

Finally, mention the changed behaviour in ReleaseNotes.rst.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D117232
 		2022-01-20 19:56:34 +01:00
..
INPUTS
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bindings Recommit: Compress formatting of array type names (int [4] -> int[4]) 2021-10-21 11:34:43 -07:00
cmake Re-land [CodeView] Add full repro to LF_BUILDINFO record 2022-01-19 19:44:37 -05:00
docs [clang] Improve -Wdeclaration-after-statement 2022-01-20 19:56:34 +01:00
examples [clang][driver] Add -fplugin-arg- to pass arguments to plugins 2021-11-25 10:47:55 +01:00
include Add `isConsteval` matcher 2022-01-20 13:35:10 -05:00
lib [clang] Improve -Wdeclaration-after-statement 2022-01-20 19:56:34 +01:00
runtime
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test [clang] Improve -Wdeclaration-after-statement 2022-01-20 19:56:34 +01:00
tools [OpenMP] Don't pass empty files to nvlink 2022-01-20 13:12:02 -05:00
unittests Add `isConsteval` matcher 2022-01-20 13:35:10 -05:00
utils [Clang][RISCV] Change TARGET_BUILTIN to require zve32x for vector instruction 2022-01-20 06:53:48 -08:00
www Support the *_WIDTH macros in limits.h and stdint.h 2022-01-13 11:46:34 -05:00
.clang-format
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.clang-tidy
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.gitignore
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CMakeLists.txt Revert "[cmake] Use `GNUInstallDirs` to support custom installation dirs." 2022-01-16 05:48:30 +00:00
CODE_OWNERS.TXT Add myself as a code owner for SYCL support 2021-09-20 09:32:25 +03:00
INSTALL.txt
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LICENSE.TXT
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ModuleInfo.txt
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NOTES.txt
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README.txt
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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/