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C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.T-langRelevant to the language teamRelevant to the language teamT-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.
Description
Discovered in #49039 the recent stabilization of !
unfortunately has some hazards related to coercion on the libs side of things. We discussed this at the work week and decided that we can't land PRs like #49039 which would also mean that the libs team wouldn't be able to actually recommend using !
as an error type (bummer!)
This is intended to be a tracking issue for sorting this out. I'm tagging it as a regression to mainly keep track of it, but it's not strictly speaking a regression.
cc @rust-lang/libs
cc @rust-lang/lang
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C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.T-langRelevant to the language teamRelevant to the language teamT-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.