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PLC-lang

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rusty
Structured Text Parser and LLVM Frontend

Rust · 362 stars

Beginner friendly Everything

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Emit pointer parameter attributes (captures(none), readonly) for generated functions Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PLC-lang/rusty#1822 · Opened Jul 20, 2026
function VAR_OUTPUT on the direct by-ref path doesn't apply copy-out semantics Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PLC-lang/rusty#1800 · Opened Jul 7, 2026
VAR_OUTPUT copy-backs for cast-needed scalar and bit-access outputs run too late when call is in a condition Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PLC-lang/rusty#1799 · Opened Jul 7, 2026
CFC: support feedback wires Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PLC-lang/rusty#1798 · Opened Jul 6, 2026
CFC: backport IDE-side validations to the compiler Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1797 · Opened Jul 6, 2026
CFC: technical documentation in the book Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PLC-lang/rusty#1796 · Opened Jul 6, 2026
Inconsistent implementation difference between SUPER and THIS Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1756 · Opened Jun 1, 2026
Inheritance/interface override of a REFERENCE TO property is rejected Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PLC-lang/rusty#1750 · Opened May 27, 2026
Polymorphic dispatch missing for VAR_IN_OUT FB parameter calls across compilation boundaries Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

PLC-lang/rusty#1743 · Opened May 18, 2026
Typed enum defined with typed literal initialization should produce validations for incompatible types Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 52/100

PLC-lang/rusty#1694 · Opened Apr 22, 2026
Improve Parsing Error Recovery Open

refactor tracking

Difficulty 5/5 Over a week Newbie friendliness 35/100

PLC-lang/rusty#1659 · 1 comment · Opened Apr 9, 2026
Copyright holder for the contents of the header should be specifiable Open

enhancement header-generator low-priority

Difficulty 3/5 1-2 days Newbie friendliness 48/100

PLC-lang/rusty#1626 · Opened Mar 9, 2026
dependencies.plc.h does not account for multiple generated libraries and their dependencies Open

bug header-generator medium-priority

Difficulty 5/5 Over a week Newbie friendliness 30/100

PLC-lang/rusty#1625 · Opened Mar 9, 2026
Enums generate cumbersome names Open

bug header-generator low-priority

Difficulty 3/5 1-2 days Newbie friendliness 48/100

PLC-lang/rusty#1624 · Opened Mar 9, 2026
Input variables of structs should be passed as (const) pointer Open

bug header-generator medium-priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1622 · Opened Mar 9, 2026
Make some errors non-configurable Open

low-priority

Difficulty 5/5 Over a week Newbie friendliness 20/100

PLC-lang/rusty#1615 · Opened Feb 27, 2026
After the init refactor, we should remove the redundant __init variables Open

low-priority refactor

Difficulty 4/5 3-5 days Newbie friendliness 30/100

PLC-lang/rusty#1612 · Opened Feb 26, 2026
Improve error message for trailing dollar before closing string delimiter Open

enhancement low-priority refactor

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PLC-lang/rusty#1606 · Opened Feb 20, 2026
Refactor the library build script to no longer link again Open

low-priority refactor

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

PLC-lang/rusty#1572 · 1 reaction · Opened Jan 14, 2026
Create some LIT / End to End tests for windows Open

low-priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1571 · Opened Jan 14, 2026
Add the stdlib in the docker file to /usr/lib/<arch> Open

low-priority

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

PLC-lang/rusty#1565 · 1 comment · Opened Dec 19, 2025
Struct inputs to a variadic function written in C from ST behave unexpectedly Open

bug low-priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1553 · 2 comments · Opened Nov 25, 2025
Add validation for type names used as values in expressions Open

bug low-priority validation

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PLC-lang/rusty#1546 · Opened Nov 11, 2025
Segfault when passing a parameter to a reference to input Open

bug medium-priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1539 · 1 comment · Opened Oct 17, 2025
Class coverage in documentation Open

documentation low-priority

Difficulty 4/5 3-5 days Newbie friendliness 25/100

PLC-lang/rusty#1534 · Opened Oct 1, 2025
"overflow" detection for fp values outside of `f32` range Open

low-priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1531 · Opened Sep 25, 2025
Refactor: error message for initializing multiple variables Open

bug Initializers low-priority validation

Difficulty 3/5 1-2 days Newbie friendliness 38/100

PLC-lang/rusty#1527 · Opened Sep 19, 2025
Polymorphism Optimizations Open

enhancement low-priority performance

Difficulty 5/5 Over a week Newbie friendliness 25/100

PLC-lang/rusty#1516 · Opened Sep 10, 2025
Validate "wrapped" assignment statements OR treat assignments as expressions Open

codegen enhancement low-priority validation

Difficulty 5/5 Over a week Newbie friendliness 35/100

PLC-lang/rusty#1512 · Opened Sep 8, 2025
Extend lit configuration for IR codegen tests Open

good first issue low-priority test

Difficulty 4/5 3-5 days Newbie friendliness 25/100

PLC-lang/rusty#1511 · Opened Sep 8, 2025
Improve the parameter error reporting/add a hint on default params Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

PLC-lang/rusty#1509 · 2 comments · Opened Sep 4, 2025
Passing a VLA to a function from within another function using `VAR_IN_OUT` Open

bug medium-priority

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PLC-lang/rusty#1508 · 2 comments · 1 reaction · Opened Sep 3, 2025
Transfer the bitshift logic to builtins Open

low-priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1499 · 1 comment · Opened Jul 30, 2025
`THIS` should not be in codegen Open

low-priority

Difficulty 4/5 3-5 days Newbie friendliness 42/100

PLC-lang/rusty#1475 · 4 comments · Opened May 9, 2025
Shadowing parent variables in `VAR_TEMP` blocks Open

low-priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1461 · 1 comment · Opened Apr 11, 2025
Method calls without parentheses should emit a warning/error Open

good first issue medium-priority validation

Difficulty 4/5 3-5 days Newbie friendliness 38/100

PLC-lang/rusty#1449 · Opened Mar 28, 2025
Global Namespace Operator for functions Open

codegen codesys medium-priority validation

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PLC-lang/rusty#1447 · Opened Mar 27, 2025
Assigning 64bit struct-types to pointers and vice-versa should err Open

bug low-priority validation

Difficulty 3/5 1-2 days Newbie friendliness 40/100

PLC-lang/rusty#1441 · Opened Mar 25, 2025
A parsing error occurred with continuous use of the translation symbol $ Open

bug medium-priority

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PLC-lang/rusty#1415 · 2 comments · Opened Feb 21, 2025
Win11 rusty build compiles hello_world sample but does not run as expected Open

bug low-priority

Difficulty 4/5 3-5 days Newbie friendliness 28/100

PLC-lang/rusty#1414 · 6 comments · Opened Feb 20, 2025
A LNK2017 error occurred while compiling for windows in debug mode Open

debug low-priority windows

Difficulty 4/5 3-5 days Newbie friendliness 20/100

PLC-lang/rusty#1411 · 1 comment · Opened Feb 13, 2025
Validation tests don't match reality Open

bug medium-priority

Difficulty 4/5 3-5 days Newbie friendliness 38/100

PLC-lang/rusty#1407 · Opened Feb 10, 2025
Book documentation for participants Open

documentation low-priority

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

PLC-lang/rusty#1403 · 2 reactions · Opened Feb 7, 2025
Simplify codegen by using the new lowering strategies Open

low-priority

Difficulty 5/5 Over a week Newbie friendliness 25/100

PLC-lang/rusty#1388 · 1 reaction · Opened Jan 15, 2025
False positive "this equal statement has no effect" warning Open

bug low-priority validation

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PLC-lang/rusty#1386 · Opened Jan 13, 2025
Enhance missing argument validation Open

enhancement good first issue validation

Difficulty 4/5 3-5 days Newbie friendliness 38/100

PLC-lang/rusty#1367 · 2 comments · Opened Nov 22, 2024
Fix failing tests under Apple Silicon Open

low-priority needs investigation test

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PLC-lang/rusty#1360 · Opened Nov 18, 2024
Add a hint for external functions with aggregate return types Open

enhancement low-priority validation

Difficulty 3/5 1-2 days Newbie friendliness 38/100

PLC-lang/rusty#1352 · 1 comment · Opened Oct 30, 2024
Move validation before the lowering stage Open

low-priority

Difficulty 5/5 Over a week Newbie friendliness 25/100

PLC-lang/rusty#1349 · Opened Oct 24, 2024
using `__VOID` as a type in user code should be an error Open

good first issue medium-priority

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PLC-lang/rusty#1348 · 1 comment · Opened Oct 24, 2024

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