[PATCH] D69770: [APFloat] Add recoverable string parsing errors to APFloat

[Ehud Katz via Phabricator via cfe-commits]

ekatz marked an inline comment as done.
ekatz added inline comments.


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Comment at: llvm/lib/MC/MCParser/AsmParser.cpp:3133
       return TokError("invalid floating point literal");
-  } else if (Value.convertFromString(IDVal, APFloat::rmNearestTiesToEven) ==
-             APFloat::opInvalidOp)
+  } else if (!Value.convertFromString(IDVal, APFloat::rmNearestTiesToEven))
     return TokError("invalid floating point literal");
----------------
smeenai wrote:
> I'm pretty certain this won't do what you want in an asserts build (technically a build with `LLVM_ENABLE_ABI_BREAKING_CHECKS`). The destructor of an `llvm::Expected` asserts that the Expected was checked, and evaluating an Expected as a boolean only counts as checking it if there wasn't an error, in the error case, you'll hit an assert failure instead of doing the return. You'll need to capture the Expected and then do something like `consumeError(expected.takeError())` to discard the error and avoid the assertion.
I have commited a fix for this issue in rG24b326cc610d


Repository:
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https://reviews.llvm.org/D69770