[PATCH] D89500: Fix the error message with -fbasic-block-sections=list=<filename>

[Sriraman Tallam via cfe-commits]

On Wed, Oct 21, 2020 at 11:07 AM David Blaikie via Phabricator
<reviews at reviews.llvm.org> wrote:
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> dblaikie added a comment.
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> In D89500#2344234 <https://reviews.llvm.org/D89500#2344234>, @davezarzycki wrote:
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> > I think I fixed it. Please verify: 87f6de72bcd346bbbf468e9f9a0e9d1bbf0630a9 <https://reviews.llvm.org/rG87f6de72bcd346bbbf468e9f9a0e9d1bbf0630a9>
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> Thanks - if that's unblocked you, great!
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> @tmsriram could you check on this? I'm surprised this test isn't failing - I can't see any CHECK lines for the "ERROR" prefix used by the error test (& FileCheck usually fails if it finds no relevant CHECK lines... so I'm not sure what's happening there).
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> Also: I'd expect a failing compilation not to write the file out? (I'd expect it to be writing to a temporary file, then moving the file into position once the compilation has finished successfully, so there's never a half-written file, etc - in case the compiler crashes) so I wonder what's going on here. Could you check what the behavior is/why it's trying to write a file even when there's an error? (I could be wrong on my assumptions/understanding here - perhaps this is true of other error paths too, that they do try to write the output file and maybe delete it after instead (though that wouldn't be crash-resilient))

Taking a look right now.

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> Repository:
>   rG LLVM Github Monorepo
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> CHANGES SINCE LAST ACTION
>   https://reviews.llvm.org/D89500/new/
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> https://reviews.llvm.org/D89500
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