llvm-project/clang
Olivier Goffart 67049f034d Fix crash parsing invalid code
The code in the test caused a crash with this backtrace:

 RecordLayoutBuilder.cpp:2934: const clang::ASTRecordLayout &clang::ASTContext::getASTRecordLayout(const clang::RecordDecl *) const: Assertion `!D->isInvalidDecl() && "Cannot get layout of invalid decl!"' failed.
 [...]
 #7 0x00007f63963d845a __assert_fail_base (/usr/lib/libc.so.6+0x2c45a)
 #8 0x00007f63963d84d2 (/usr/lib/libc.so.6+0x2c4d2)
 #9 0x00007f63937a0631 clang::ASTContext::getASTRecordLayout(clang::RecordDecl const*) const /home/olivier/prog/llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp:2935:3
 #10 0x00007f63937a1ad5 getFieldOffset(clang::ASTContext const&, clang::FieldDecl const*) /home/olivier/prog/llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp:3057:37
 #11 0x00007f6391869f14 clang::Sema::RefersToMemberWithReducedAlignment(clang::Expr*, llvm::function_ref<void (clang::Expr*, clang::RecordDecl*, clang::FieldDecl*, clang::CharUnits)>) /home/olivier/prog/llvm/tools/clang/lib/Sema/SemaChecking.cpp:12139:23
 #12 0x00007f639186a2f8 clang::Sema::CheckAddressOfPackedMember(clang::Expr*) /home/olivier/prog/llvm/tools/clang/lib/Sema/SemaChecking.cpp:12190:1
 #13 0x00007f6391a7a81c clang::Sema::CheckAddressOfOperand(clang::ActionResult<clang::Expr*, true>&, clang::SourceLocation) /home/olivier/prog/llvm/tools/clang/lib/Sema/SemaExpr.cpp:11111:10
 #14 0x00007f6391a7f5d2 clang::Sema::CreateBuiltinUnaryOp(clang::SourceLocation, clang::UnaryOperatorKind, clang::Expr*) /home/olivier/prog/llvm/tools/clang/lib/Sema/SemaExpr.cpp:11932:18

Fixing by bailing out for invalid classes.

Differential Revision: https://reviews.llvm.org/D35108

llvm-svn: 307371
2017-07-07 09:38:59 +00:00
..
INPUTS
bindings fix trivial typos in comments; NFC 2017-07-03 08:49:44 +00:00
cmake Don't defer to the GCC driver for linking arm-baremetal 2017-05-25 15:42:13 +00:00
docs Update Cross-DSO CFI documentation. 2017-07-07 00:48:12 +00:00
examples Add LLVMOption to clang-interpreter, corresponding to r291938. 2017-01-14 08:54:05 +00:00
include [ObjC] Avoid the -Wunguarded-availability warnings for protocol 2017-07-07 09:15:29 +00:00
lib Fix crash parsing invalid code 2017-07-07 09:38:59 +00:00
runtime [sanitizer] Passthrough CMAKE_OSX_DEPLOYMENT_TARGET and CMAKE_OSX_SYSROOT when building compiler-rt from clang/runtime/CMakeLists.txt 2016-12-15 23:20:54 +00:00
test Fix crash parsing invalid code 2017-07-07 09:38:59 +00:00
tools [clang-rename] Just return instead of calling exit(3) from main. 2017-06-30 20:24:32 +00:00
unittests [clang-format] Add space between a message field key and the opening bracket in proto messages 2017-07-06 13:58:29 +00:00
utils This reverts r305820 (ARMv.2-A FP16 vector intrinsics) because it shows 2017-07-06 16:37:31 +00:00
www [cxx_status] Update link to Modules TS to latest working draft. Fix Coroutines TS flag to work if copy-pasted. 2017-07-06 00:29:13 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt [GSoC] Shell autocompletion for clang 2017-05-23 18:39:08 +00:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT
ModuleInfo.txt
NOTES.txt
README.txt Remove test commit. 2017-06-30 03:03:28 +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/