Issues

`new Date(2023, 4, 31)` is 1 May on js and 31 April on cpp, and each backend's `Date.fromIsoString` accepts a different set of strings

temperlang/temper#622 · opened

on Oct 12, 2026

1

`DenseBitVector.set` loses a bit set at index 128 or above on js, whatever the capacity, and on cpp any `set` or `get` past the capacity kills the program

temperlang/temper#621 · opened

on Oct 12, 2026

1

js: `Mapped.getOr` returns the fallback for a key that is present with a null value

temperlang/temper#620 · opened

on Oct 12, 2026

1

A function's last expression is dropped after a loop that holds both a `return` and a `continue` or `break`

temperlang/temper#618 · opened

on Oct 12, 2026

1

A generic function passed as a value with its type argument, `identity<Int>`, fails at run time on every backend except the interpreter

temperlang/temper#619 · opened

on Oct 12, 2026

1

cpp: a library named `nan`, `time`, `random` or after another C library function does not compile, because its namespace collides with the function

temperlang/temper#612 · opened

on Oct 9, 2026

`temper run -b js` throws NoSuchElementException when the library it is asked to run is not configured: a mistyped `--library`, or a config file that does not parse

temperlang/temper#611 · opened

on Oct 9, 2026

A library name with a digit is imported under a different name on py and rust, so `temper run` fails: `f64str` as `f64_str`, `radix-36` as `radix36`

temperlang/temper#610 · opened

on Oct 9, 2026

`temper run -b py` fails with ModuleNotFoundError for a library whose name has a dash, unless the build records a dependency from that library on another

temperlang/temper#609 · opened

on Oct 9, 2026

A generator's `done`, `is ValueResult`, and `nextSafe()` on its last step break on most backends

temperlang/temper#579 · opened

on Oct 8, 2026

A `continue` or `break` in a generator's loop loses its target, and java, rust and cpp output does not compile or dies

temperlang/temper#578 · opened

on Oct 8, 2026

`temper test -b lua` with no `lua` on PATH, or `-b rust` with no `cargo`, throws a NullPointerException instead of naming the missing tool

temperlang/temper#570 · opened

on Oct 8, 2026

`temper test -b java` reports the previous run's surefire results, and exits 0, when javac fails on the new code

temperlang/temper#569 · opened

on Oct 8, 2026

`temper test -b rust` reports "0 of N (N not run)" and exits 0 when the crate does not compile, and prints none of cargo's errors

temperlang/temper#568 · opened

on Oct 8, 2026

lua: a list literal of 250 elements does not load, because every element becomes an argument to one call

temperlang/temper#567 · opened

on Oct 8, 2026

cpp: a module that imports only classes from std/regex never initializes it, and building a `Regex` segfaults

temperlang/temper#566 · opened

on Oct 8, 2026

cpp: calling a method named after a C++ keyword, such as `int` or `bool`, crashes the translator

temperlang/temper#565 · opened

on Oct 8, 2026

rust: an `Int64` literal outside the `i32` range, cast with `toInt32Unsafe()` or `toFloat64Unsafe()`, is emitted without a suffix and rustc rejects it

temperlang/temper#564 · opened

on Oct 8, 2026

rust: `v as T` on a nullable `v`, in a function returning `T? throws Bubble`, emits `return Some(Err(..))`, which does not compile

temperlang/temper#563 · opened

on Oct 8, 2026

java: `List<Float64>.map` to any object type does not compile, because `Core.listMapDoubleToObj` is declared to return `List<Boolean>`

temperlang/temper#562 · opened

on Oct 8, 2026

java: a function type with `throws Bubble` and a non-primitive return becomes `Function<String, Result>`, and `Result` does not exist

temperlang/temper#561 · opened

on Oct 8, 2026

py: a type parameter bounded by a type that mentions itself, like `<T extends Ord<T>>`, raises NameError on import

temperlang/temper#560 · opened

on Oct 8, 2026

py: a local `var` that holds a function and is reassigned gets `nonlocal` in its own function, and the module fails to import

temperlang/temper#559 · opened

on Oct 8, 2026

py: `Int.toString(36)` raises ValueError for every value, because the radix check stops at 35

temperlang/temper#558 · opened

on Oct 8, 2026

cpp: `String.toFloat64` bubbles on subnormal, underflowing and overflowing inputs, because `std::stod` throws on range errors

temperlang/temper#557 · opened

on Oct 8, 2026

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Issues

`new Date(2023, 4, 31)` is 1 May on js and 31 April on cpp, and each backend's `Date.fromIsoString` accepts a different set of strings

`DenseBitVector.set` loses a bit set at index 128 or above on js, whatever the capacity, and on cpp any `set` or `get` past the capacity kills the program

js: `Mapped.getOr` returns the fallback for a key that is present with a null value

A function's last expression is dropped after a loop that holds both a `return` and a `continue` or `break`

A generic function passed as a value with its type argument, `identity<Int>`, fails at run time on every backend except the interpreter

cpp: a library named `nan`, `time`, `random` or after another C library function does not compile, because its namespace collides with the function

`temper run -b js` throws NoSuchElementException when the library it is asked to run is not configured: a mistyped `--library`, or a config file that does not parse

A library name with a digit is imported under a different name on py and rust, so `temper run` fails: `f64str` as `f64_str`, `radix-36` as `radix36`

`temper run -b py` fails with ModuleNotFoundError for a library whose name has a dash, unless the build records a dependency from that library on another

A generator's `done`, `is ValueResult`, and `nextSafe()` on its last step break on most backends

A `continue` or `break` in a generator's loop loses its target, and java, rust and cpp output does not compile or dies

`temper test -b lua` with no `lua` on PATH, or `-b rust` with no `cargo`, throws a NullPointerException instead of naming the missing tool

`temper test -b java` reports the previous run's surefire results, and exits 0, when javac fails on the new code

`temper test -b rust` reports "0 of N (N not run)" and exits 0 when the crate does not compile, and prints none of cargo's errors

lua: a list literal of 250 elements does not load, because every element becomes an argument to one call

cpp: a module that imports only classes from std/regex never initializes it, and building a `Regex` segfaults

cpp: calling a method named after a C++ keyword, such as `int` or `bool`, crashes the translator

rust: an `Int64` literal outside the `i32` range, cast with `toInt32Unsafe()` or `toFloat64Unsafe()`, is emitted without a suffix and rustc rejects it

rust: `v as T` on a nullable `v`, in a function returning `T? throws Bubble`, emits `return Some(Err(..))`, which does not compile

java: `List<Float64>.map` to any object type does not compile, because `Core.listMapDoubleToObj` is declared to return `List<Boolean>`

java: a function type with `throws Bubble` and a non-primitive return becomes `Function<String, Result>`, and `Result` does not exist

py: a type parameter bounded by a type that mentions itself, like `<T extends Ord<T>>`, raises NameError on import

py: a local `var` that holds a function and is reassigned gets `nonlocal` in its own function, and the module fails to import

py: `Int.toString(36)` raises ValueError for every value, because the radix check stops at 35

cpp: `String.toFloat64` bubbles on subnormal, underflowing and overflowing inputs, because `std::stod` throws on range errors