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Issue with union initialization using braces #2033

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nathanchance opened this issue Jun 26, 2024 · 1 comment
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Issue with union initialization using braces #2033

nathanchance opened this issue Jun 26, 2024 · 1 comment
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[BUG] llvm A bug that should be fixed in upstream LLVM [PATCH] Submitted A patch has been submitted for review Reported upstream This bug was filed on LLVM’s issue tracker, Phabricator, or the kernel mailing list.

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@nathanchance
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A recent thread reveals that a union where the first member is not the largest member may not be initialized fully with either {} or { 0 }, which Linus considers a bug for the kernel. It sounds like there is not much opposition for default initializing the first member and zero initializing the rest of the union from some discussion on the upstream LLVM tracker.
@nathanchance nathanchance added [BUG] llvm A bug that should be fixed in upstream LLVM Reported upstream This bug was filed on LLVM’s issue tracker, Phabricator, or the kernel mailing list. labels Jun 26, 2024
@nathanchance
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I think llvm/llvm-project#97121 is the proposed upstream fix.

@nathanchance nathanchance added the [PATCH] Submitted A patch has been submitted for review label Aug 20, 2024
@nathanchance nathanchance mentioned this issue Oct 9, 2024
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[BUG] llvm A bug that should be fixed in upstream LLVM [PATCH] Submitted A patch has been submitted for review Reported upstream This bug was filed on LLVM’s issue tracker, Phabricator, or the kernel mailing list.
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