[cfe-dev] possible bug in clang 4.0.0

[Zheng Tao Lee via cfe-dev]

Hi,

I am using clang 4.0.0 and found this cast align error prompt to be strange.

To reproduce the error, run command below with clang 4.0.0.
c:\llvm\bin\clang++ test.cpp -c -Wcast-align -target arm -std=c++14
clang++.exe: warning: unknown platform, assuming -mfloat-abi=soft
clang++.exe: warning: unknown platform, assuming -mfloat-abi=soft
test.cpp:14:12: warning: cast from 'const AcGeVector3d *' to 'double *' increases required alignment from 4 to 8
      [-Wcast-align]
    return (double*)&vec;
           ^~~~~~~~~~~~~
1 warning generated.

AcGeVector3d is just a class containing 3 doubles and we expect it to be 8 aligned.

Thanks,
Tao

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