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riscv64: rustc-LLVM ERROR: failed to perform tail call elimination on a call site marked musttail

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

C-bugCategory: This is a bug.Category: This is a bug.

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

O-riscvTarget: RISC-V architectureTarget: RISC-V architecture

Status: Open.

#148748 In rust-lang/rust;

· yuzibo opened on Nov 9, 2025

ICE from explicit tail call in defaulted trait method

C-bugCategory: This is a bug.Category: This is a bug.

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

requires-incomplete-featuresThis issue requires the use of incomplete features.This issue requires the use of incomplete features.

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.

Status: Open.

#144985 In rust-lang/rust;

· theemathas opened on Aug 6, 2025

Tail call signature equality check only really needs to be subtyping

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

requires-incomplete-featuresThis issue requires the use of incomplete features.This issue requires the use of incomplete features.

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.

Status: Open.

#144953 In rust-lang/rust;

· compiler-errors opened on Aug 5, 2025

Passing Indirect Operands into LLVM hits a span_bug

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

C-bugCategory: This is a bug.Category: This is a bug.

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

requires-incomplete-featuresThis issue requires the use of incomplete features.This issue requires the use of incomplete features.

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.

Status: Open.

#144855 In rust-lang/rust;

· tnuha opened on Aug 3, 2025

Miri reports UB for explicit tail call with by-value non-ZST struct parameter

A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)Area: Constant evaluation, covers all const contexts (static, const fn, ...)

C-bugCategory: This is a bug.Category: This is a bug.

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

requires-incomplete-featuresThis issue requires the use of incomplete features.This issue requires the use of incomplete features.

Status: Open.

#144820 In rust-lang/rust;

· narpfel opened on Aug 2, 2025

ICE when tail calling from a function with RPIT

C-bugCategory: This is a bug.Category: This is a bug.

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

requires-incomplete-featuresThis issue requires the use of incomplete features.This issue requires the use of incomplete features.

requires-nightlyThis issue requires a nightly compiler in some way.This issue requires a nightly compiler in some way.

S-blockedStatus: Blocked on something else such as an RFC or other implementation work.Status: Blocked on something else such as an RFC or other implementation work.

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.

Status: Open.

#139305 In rust-lang/rust;

· sososopy opened on Apr 3, 2025

Inconsistent recursive fn call elimination

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

C-bugCategory: This is a bug.Category: This is a bug.

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

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.

Status: Open.

#125698 In rust-lang/rust;

· Rudxain opened on May 29, 2024

Tracking Issue for Explicit Tail Calls

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

F-explicit_tail_calls`#![feature(explicit_tail_calls)]``#![feature(explicit_tail_calls)]`

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#112788 In rust-lang/rust;

· WaffleLapkin opened on Jun 19, 2023