jyknight added a comment.
In D150226#4400782 <https://reviews.llvm.org/D150226#4400782>, @rupprecht wrote:
> As a general question/feature request: is there a way to have specific
> warnings apply even for system headers? It would be nice if I could check
> what breaks when by adding `-Wsystem-error=enum-constexpr-conversion` to the
> global build flags. Rebuilding clang w/ this patched in also works, but is a
> little more difficult/noisy.
I think there's no per-warning flag (you can turn on _all_ of the enabled
warnings in system headers with `-Wsystem-headers`), but by modifying the clang
sources you can add `ShowInSystemHeader` to the diagnostic.
E.g.
def warn_constexpr_unscoped_enum_out_of_range : Warning<
"integer value %0 is outside the valid range of values [%1, %2] for this "
- "enumeration type">, DefaultError,
InGroup<DiagGroup<"enum-constexpr-conversion">>;
+ "enumeration type">, DefaultError,
InGroup<DiagGroup<"enum-constexpr-conversion">>, ShowInSystemHeader;
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D150226/new/
https://reviews.llvm.org/D150226
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