LLVM/clang vs. GCC: Warning Parity.

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Hi,

I attempted to gauge warning parity between LLVM/clang 3.8.0 (early Jan trunk) and GCC 5.3.0 using the DejaGNU suites: gcc/testsuite/gcc.dg and gcc/testsuite/c-c+±common
PFA, the tabulated results. These are still preliminary – it is possible that there exist equivalent LLVM/clang warning options to be used instead of the GCC warning options I used.

I’d appreciate receiving feedback and if these are indeed gaps, is the community aware of them and are they being addressed?

I also need input on the documentation to be used for LLVM/clang warning options; for, unlike GCC’s:

https://gcc.gnu.org/onlinedocs/gcc-5.3.0/gcc/Warning-Options.html#Warning-Options
http://clang.llvm.org/docs/UsersManual.html#options-to-control-error-and-warning-messages

  • is not as exhaustive.

Thanks very much.

Regards,
Anmol.

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