Interpret EH actions properly#102685
Merged
bors merged 1 commit intorust-lang:masterfrom Oct 11, 2022
Merged
Conversation
Collaborator
|
Hey! It looks like you've submitted a new PR for the library teams! If this PR contains changes to any Examples of
|
Contributor
|
r? @m-ou-se (rust-highfive has picked a reviewer for you, use r? to override) |
The EH actions stored in the LSDA follows the format of GCC except table (even for LLVM-generated code). An missing action in the table is the encoding for `Terminate`, see [1]. The currently code interprets it as `None`, as a workaround for rust-lang#35011, an issue that seems to occur in LLVM 3.7 and not after 3.9. These are very old versions of LLVM and we don't support them anymore, so remove this workaround and interpret them properly. Note that LLVM currently does not emit any `Terminate` actions, but GCC does. Although GCC backend currently doesn't do unwinding, removing it preemptively would prevent future developers from wasting time to figure out what's wrong. [1]: https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/libsupc%2B%2B/eh_personality.cc#L522-L526
Member
|
@bors r+ |
Collaborator
Dylan-DPC
added a commit
to Dylan-DPC/rust
that referenced
this pull request
Oct 11, 2022
Interpret EH actions properly The EH actions stored in the LSDA follows the format of GCC except table (even for LLVM-generated code). An missing action in the table is the encoding for `Terminate`, see https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/libsupc%2B%2B/eh_personality.cc#L522-L526. The currently code interprets it as `None`, as a workaround for rust-lang#35011, an issue that seems to occur in LLVM 3.7 and not after 3.9. These are very old versions of LLVM and we don't support them anymore, so remove this workaround and interpret them properly. Note that LLVM currently does not emit any `Terminate` actions, but GCC does. Although GCC backend currently doesn't do unwinding, removing it preemptively would prevent future developers from wasting time to figure out what's wrong. `@rustbot` label: +T-compiler
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Oct 11, 2022
…iaskrgr Rollup of 11 pull requests Successful merges: - rust-lang#100387 (Check uniqueness of impl items by trait item when applicable.) - rust-lang#101727 (Stabilize map_first_last) - rust-lang#101774 (Warn about safety of `fetch_update`) - rust-lang#102227 (fs::get_path solarish version.) - rust-lang#102445 (Add `is_empty()` method to `core::ffi::CStr`.) - rust-lang#102612 (Migrate `codegen_ssa` to diagnostics structs - [Part 1]) - rust-lang#102685 (Interpret EH actions properly) - rust-lang#102869 (Add basename and dirname aliases) - rust-lang#102889 (rustc_hir: Less error-prone methods for accessing `PartialRes` resolution) - rust-lang#102893 (Fix ICE rust-lang#102878) - rust-lang#102912 (:arrow_up: rust-analyzer) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
Aaron1011
pushed a commit
to Aaron1011/rust
that referenced
this pull request
Jan 6, 2023
Interpret EH actions properly The EH actions stored in the LSDA follows the format of GCC except table (even for LLVM-generated code). An missing action in the table is the encoding for `Terminate`, see https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/libsupc%2B%2B/eh_personality.cc#L522-L526. The currently code interprets it as `None`, as a workaround for rust-lang#35011, an issue that seems to occur in LLVM 3.7 and not after 3.9. These are very old versions of LLVM and we don't support them anymore, so remove this workaround and interpret them properly. Note that LLVM currently does not emit any `Terminate` actions, but GCC does. Although GCC backend currently doesn't do unwinding, removing it preemptively would prevent future developers from wasting time to figure out what's wrong. ``@rustbot`` label: +T-compiler
Aaron1011
pushed a commit
to Aaron1011/rust
that referenced
this pull request
Jan 6, 2023
…iaskrgr Rollup of 11 pull requests Successful merges: - rust-lang#100387 (Check uniqueness of impl items by trait item when applicable.) - rust-lang#101727 (Stabilize map_first_last) - rust-lang#101774 (Warn about safety of `fetch_update`) - rust-lang#102227 (fs::get_path solarish version.) - rust-lang#102445 (Add `is_empty()` method to `core::ffi::CStr`.) - rust-lang#102612 (Migrate `codegen_ssa` to diagnostics structs - [Part 1]) - rust-lang#102685 (Interpret EH actions properly) - rust-lang#102869 (Add basename and dirname aliases) - rust-lang#102889 (rustc_hir: Less error-prone methods for accessing `PartialRes` resolution) - rust-lang#102893 (Fix ICE rust-lang#102878) - rust-lang#102912 (:arrow_up: rust-analyzer) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
5 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The EH actions stored in the LSDA follows the format of GCC except table (even for LLVM-generated code). An missing action in the table is the encoding for
Terminate, see https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/libsupc%2B%2B/eh_personality.cc#L522-L526.The currently code interprets it as
None, as a workaround for #35011, an issue that seems to occur in LLVM 3.7 and not after 3.9. These are very old versions of LLVM and we don't support them anymore, so remove this workaround and interpret them properly.Note that LLVM currently does not emit any
Terminateactions, but GCC does. Although GCC backend currently doesn't do unwinding, removing it preemptively would prevent future developers from wasting time to figure out what's wrong.@rustbot label: +T-compiler