[llvm] r191287 - [msan] Handling of atomic load/store, atomic rmw, cmpxchg.

[Evgeniy Stepanov]

Btw, there are similar warnings from other parts of LLVM when building with gcc.

../tools/clang/lib/CodeGen/CGBuiltin.cpp: In function
‘llvm::VectorType* GetNeonType(clang::CodeGen::CodeGenFunction*,
clang::NeonTypeFlags, bool)’:
../tools/clang/lib/CodeGen/CGBuiltin.cpp:1628:1: warning: control
reaches end of non-void function [-Wreturn-type]

Is this not an issue for some reason?


On Wed, Sep 25, 2013 at 1:00 PM, Evgeniy Stepanov
<eugeni.stepanov at gmail.com> wrote:
> r191361.
>
> On Wed, Sep 25, 2013 at 3:11 AM, Johannes Obermayr
> <johannesobermayr at gmx.de> wrote:
>> This commit introduces following build error on openSUSE:
>>
>> lib/Transforms/Instrumentation/MemorySanitizer.cpp: In member function 'llvm::AtomicOrdering {anonymous}::MemorySanitizerVisitor::addAcquireOrdering(llvm::AtomicOrdering)':
>> lib/Transforms/Instrumentation/MemorySanitizer.cpp:937:3: warning: control reaches end of non-void function [-Wreturn-type]
>> lib/Transforms/Instrumentation/MemorySanitizer.cpp: In member function 'llvm::AtomicOrdering {anonymous}::MemorySanitizerVisitor::addReleaseOrdering(llvm::AtomicOrdering)':
>> lib/Transforms/Instrumentation/MemorySanitizer.cpp:921:3: warning: control reaches end of non-void function [-Wreturn-type]
>>
>> ... testing for serious compiler warnings
>> I: Program returns random data in a function
>> E: llvm no-return-in-nonvoid-function /home/abuild/rpmbuild/BUILD/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp:937, 921
>>
>> Please add a return value in default: switch or after switch{}.