Compiler Explorer wanted features & bugfixes

[ojeda]

Features that we would like to see

Required (we almost certainly want them)

• bindgen support.

  • Issue: [COMPILER REQUEST]: bindgen for C/C++ compiler-explorer/compiler-explorer#4554.

• rustfmt support (i.e. as a compiler or perhaps versioned CE tool).

  • Issue: [COMPILER REQUEST]: rustfmt for Rust compiler-explorer/compiler-explorer#4553.

Nice to have (not critical, we could workaround if needed, etc.)

• Support "Compile to binary object" for multiple architectures.

  • Issue: [BUG]: Multiarch compilers not communicating arch to objdump compiler-explorer/compiler-explorer#5593.

• Pre-filling flags (e.g. --edition for Rust) instead of compiler overrides' implicit approach.

  • Issue: [REQUEST]: Pre-fill --edition=2021 for Rust compiler-explorer/compiler-explorer#3765.
  • Issue: [REQUEST]: Pre-fill user-configurable compiler options edit box compiler-explorer/compiler-explorer#3100.
  • Related issue: [BUG]: It has become hard to build Rust code with older compilers compiler-explorer/compiler-explorer#5349.
  • Related issue: [BUG]: Rust links that included the --edition flag broke with compiler overrides compiler-explorer/compiler-explorer#5429.

• Support overriding all flags on the command line (i.e. support multiple --target, --sysroot, --edition...).

  • See the item of the same title at rustc wanted features & bugfixes #355.

• Augmenting compiler diagnostics with hyperlinks and custom actions.

  • Issue: [REQUEST]: Augmenting compiler diagnostics with hyperlinks and custom actions compiler-explorer/compiler-explorer#5284.

• Enable additional useful tools.

  • Add new tool: objdump compiler-explorer/compiler-explorer#6650.

Low priority (we will likely not use them in the end)

Done (stabilized, fixed, not needed anymore, etc.)

• Enable additional tools that are available for C and C++.

  • Issue: [REQUEST]: Enable additional tools for Rust: nm, ldd, pahole, strings compiler-explorer/compiler-explorer#6796.
  • PR: Add some tools for rust compiler-explorer/compiler-explorer#7264.

• Code formatting support.

  • Issue: [REQUEST] rustfmt for Rust compiler-explorer/compiler-explorer#2564.
  • PR: Add rustfmt as code formatting tool for Rust compiler-explorer/compiler-explorer#2798.

• MIR output support.

  • Issue: [REQUEST] MIR output for Rust compiler-explorer/compiler-explorer#2566.
  • PR: Add rustc MIR output view compiler-explorer/compiler-explorer#2795.

• HIR output support.

  • Issue: [REQUEST] HIR output for Rust compiler-explorer/compiler-explorer#2567.
  • PR: rust: HIR dump and small refactor with macro expansion compiler-explorer/compiler-explorer#3147.

• Macro expansion support.

  • Issue: [REQUEST] Macro expansion for Rust compiler-explorer/compiler-explorer#2568.
  • PR: Add rustc Macro Expansion view compiler-explorer/compiler-explorer#2932.

• mrustc compiler support.

  • Issue: [REQUEST] mrustc as alternative Rust compiler compiler-explorer/compiler-explorer#2643.
  • PR: Initial support for mrustc compiler-explorer/compiler-explorer#2681.

• Rust GCC (i.e. gccrs) support.

  • Issue: [REQUEST] gccrs as alternative Rust compiler compiler-explorer/compiler-explorer#2644.
  • PR: Add GCCRS support in the Rust config compiler-explorer/compiler-explorer#2628.
  • PR: Create GCCRSCompiler class from GCCCompiler compiler-explorer/compiler-explorer#2632.

• rustc_codegen_gcc backend support.

  • Issue: [REQUEST] rustc_codegen_gcc as alternative Rust compiler compiler-explorer/compiler-explorer#2683.
  • PR: Initial support for rustc_codegen_gcc compiler-explorer/misc-builder#6.
  • PR: Adding rustc-cg-gcc compiler-explorer/compiler-explorer#2746.

• Allow using unstable features in all compilers.

  • Issue: [REQUEST] Support the RUSTC_BOOTSTRAP=1 escape hatch (env vars in general) compiler-explorer/compiler-explorer#2724.
  • Issue: Enable Rust HIR and Macro Expansion for non-nightly compilers compiler-explorer/compiler-explorer#3154.
  • Issue: [REQUEST]: Environment variable support compiler-explorer/compiler-explorer#4151.
  • PR: Compiler overrides compiler-explorer/compiler-explorer#5001.

• Default to the latest available Rust edition.

  • Issue: [REQUEST]: Pre-fill --edition=2021 for Rust compiler-explorer/compiler-explorer#3765.
  • Issue: [REQUEST]: Pre-fill user-configurable compiler options edit box compiler-explorer/compiler-explorer#3100.
  • PR: Compiler overrides compiler-explorer/compiler-explorer#5001.

• Clippy support.

  • Issue: [REQUEST] Clippy for Rust compiler-explorer/compiler-explorer#2562.
  • PR: Add clippy for Rust compiler-explorer/compiler-explorer#7477.
  • PR: [rust] don’t use a separate tempdir for clippy compiler-explorer/compiler-explorer#7497.

• C2Rust support.

  • Issue: [COMPILER REQUEST]: C2Rust compiler-explorer/compiler-explorer#5900.
  • Issue: [COMPILER REQUEST]: c2rust compiler-explorer/compiler-explorer#6888.
  • PR: Initial support for c2rust compiler-explorer/compiler-explorer#7475.

• Miri support.

  • Issue: [REQUEST] Miri for Rust compiler-explorer/compiler-explorer#2563.
  • PR: Add Miri tool for Rust compiler-explorer/compiler-explorer#7718.
  • PR: [rust]: install rust-src component compiler-explorer/infra#1630.
  • PR: Install Miri compiler-explorer/infra#1631.
  • PR: Build Miri for Rust compiler-explorer/misc-builder#112.
  • PR: [miri] install rust-src component to be able to build the miri sysroot compiler-explorer/misc-builder#113.
  • PR: Add Miri build compiler-explorer/compiler-workflows#36.

---

Bugs that we would like to see fixed

Required (we almost certainly want them)

Nice to have (probably not critical, we could workaround if needed, etc.)

Low priority (we will likely not use them in the end)

Done (stabilized, fixed, or not needed anymore, etc.)

• Rust links that included the --edition flag broke with compiler overrides.
  • Issue: [BUG]: Rust links that included the --edition flag broke with compiler overrides compiler-explorer/compiler-explorer#5429.
  • PR: When rust edition appears in both overrides and compiler-options, prefer the options compiler-explorer/compiler-explorer#6789.