[cfe-dev] Uninitialized Variables Analysis crashing

[Csaba Raduly via cfe-dev]

Hi João Paulo,


On Sun, Sep 23, 2018 at 11:39 PM, João Paulo Labegalini de Carvalho
via cfe-dev <cfe-dev at lists.llvm.org> wrote:
> Hi,
>
> I have implemented a new Stmt in clang which given
>
> __speculate {
>  // user code
> }
>
> generates LLVM IR equivalent to as if the following code was given:
>
...
>
> However, if UninitializedVariablesAnalysis is enabled, clang crashes at
> runOnBlock function (lib/Analysis/UninitializedValues.cpp). If I disable it
> via -Wno-uninitialized, the code generated runs flawlessly and works as
> expected.

"crash" is a meaningless term. Does it generate an access violation,
an assertion failure, or something else?
What was the error message? Is there a stack trace?


Csaba

-- 
You can get very substantial performance improvements
by not doing the right thing. - Scott Meyers, An Effective C++11/14 Sampler
So if you're looking for a completely portable, 100% standards-conformat way
to get the wrong information: this is what you want. - Scott Meyers (C++TDaWYK)