FujoJTOP

FujoJTOP/loment

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

26 good first / help-wanted issues · Rust · last activity Sep 22, 2026

2 stars 0 forks 2 watchers Rust MIT License
capability-security compiler no-std programming-language rust self-hosted systems-programming
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26 Open Issues Need Help Last updated: Sep 22, 2026

Open Issues Need Help

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loment run/build cannot build the shipped `tour` example, and prints no diagnostic 8 days ago
bug help wanted sev-4 frontend
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
Both language servers ignore the `choose write grammar` declaration, so a valid file in a non-native surface grammar reports false diagnostics 8 days ago
bug help wanted sev-2 lsp
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
choose write grammar c: no integer conversion exists at any site and the cast is out of subset, so a unit can only use one integer type 8 days ago
bug help wanted sev-2 grammar frontend
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
choose write grammar c: block scope is not preserved; a declaration inside an if/while body rebinds the outer name and the program computes a different number 8 days ago
bug help wanted sev-5 grammar frontend
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment check exits 0 and prints nothing for files that cannot be built 8 days ago
bug help wanted up-for-grabs sev-5 cli frontend
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment fmt deletes every comment, so loment doc loses the documentation it was generated from 8 days ago
bug help wanted sev-5 cli
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
`use std` takes 18 minutes and then dies with SIGILL, printing nothing 8 days ago
bug help wanted sev-4 selfhost
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
Unknown string escapes are silently accepted with the backslash dropped ("\x41" becomes the characters x41) 8 days ago
bug help wanted up-for-grabs sev-5 frontend
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
A struct whose last field has no trailing comma crashes the compiler driver with no diagnostic (SIGSEGV on Linux, exit 127 on Windows) 8 days ago
bug help wanted sev-4 frontend
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
Internal `fujoc-s:` errors leak to users: untranslated, one with an embedded NUL, pointing at docs the package does not ship 8 days ago
bug good first issue up-for-grabs easy ai-agent-friendly sev-1 selfhost cli
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
Unsupported numeric literals (0b…, 1_000, 1.5) are silently accepted and evaluate to a prefix of themselves 9 days ago
bug help wanted up-for-grabs
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
An unrecognised character (@) is silently discarded in statement position 11 days ago
bug help wanted up-for-grabs
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment fmt splits `pub` onto its own line, separated from the item it modifies 11 days ago
bug good first issue up-for-grabs easy ai-agent-friendly
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
`free` checks neither ownership nor double-free: freeing twice puts one region both at the frontier and on the free list, so two live allocations alias 12 days ago
bug help wanted ai-agent-friendly
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
LSP definition request on a file with a grammar declaration raises LomError out of the handler, terminating the language server 29 days ago
bug help wanted
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
choose write grammar c: top-level typedef / global variable / union / #include / #define are neither translated nor reported — check still prints [OK] 29 days ago
bug help wanted
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
choose write grammar c: a second function definition on the same line is silently dropped (_C_FN anchors at ^, and skipped stays empty) 29 days ago
bug help wanted
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
choose write grammar c: a function-local `static` is dropped, so the value does not survive between calls (C gives 12, the translated unit gives 11) 29 days ago
bug help wanted
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment doc on a .lomt written in a surface grammar dies with an uncaught IndexError (short files) or emits docs keyed to generated line numbers (long ones) 29 days ago
bug help wanted
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment fmt --write destroys a .lomt written in a surface grammar: it merges the declaration line into the next line and deletes the function on it, exit 0 29 days ago
bug help wanted
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment check silently ignores extra file arguments and unknown switches about 1 month ago
bug good first issue up-for-grabs easy ai-agent-friendly
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment hash given a directory returns sha256 of the empty string and exits 0 about 1 month ago
bug help wanted good first issue up-for-grabs easy first-timers-only hacktoberfest ai-agent-friendly
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment check calls an empty file a path problem about 1 month ago
bug good first issue up-for-grabs easy ai-agent-friendly
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
`loment` with no arguments prints usage and then cmd.exe executes four of the usage lines as commands about 1 month ago
bug good first issue
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment tools reports `present: 7 / 6` about 1 month ago
bug good first issue
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming
loment builtins lists `str_cat`, which does not exist — only `str_concat` does about 1 month ago
bug documentation good first issue
FujoJTOP/loment
2

Loment — a systems programming language with a Rust-subset syntax and capability domains; compiles to native binaries with no runtime

Rust
#capability-security#compiler#no-std#programming-language#rust#self-hosted#systems-programming