Issues

builtin.closure: missing @[has_globals] in closure_windows.c.v and closure_nix.c.v leads to global error without -enable-globals

vlang/v#30956 · opened

on Oct 20, 2026

mcp: server-initiated requests over stdio wait for the next client message, and no hook sees notifications

vlang/v#30935 · opened

on Oct 19, 2026

`map.delete` keeps the deleted value reachable: the GC never frees what it points to

vlang/v#30916 · opened

on Oct 19, 2026

checker/cgen: compatible `fn C.` redeclarations across modules (`&u8` vs `voidptr` return) still type every call by one declaration; pointer arithmetic breaks depending on imports (follow-up to #27791)

vlang/v#30915 · opened

on Oct 19, 2026

A `mut map` receiver method from another module, called on a `shared` map, receives the `shared` wrapper instead of the map, causing a segfault

vlang/v#30913 · opened

on Oct 19, 2026

`spawn f(mut x)` where `x` is `&T` and the parameter is `mut x &T` passes the wrong pointer, causing a segfault

vlang/v#30912 · opened

on Oct 19, 2026

Iterating `&map[K]Enum` yields `&Enum`, and the comparison is silently wrong in 0.5.1

vlang/v#30911 · opened

on Oct 19, 2026

`spawn f(shared &m)` is rejected with a nonsensical hint

vlang/v#30910 · opened

on Oct 19, 2026

`cannot use map[string]T as &map in argument 1 to map__get` for nested assignment with `@[heap]` structs

vlang/v#30909 · opened

on Oct 19, 2026

C error when iterating a `shared` map parameter inside `lock`

vlang/v#30908 · opened

on Oct 19, 2026

`net.http`: idle pooled connections are never reaped — `idle_timeout` is only checked on reuse

vlang/v#30906 · opened

on Oct 19, 2026

veb (fasthttp, Linux): connection buffers never shrink, and closed connections are pooled forever

vlang/v#30905 · opened

on Oct 19, 2026

transform: since #30793, a by-value parameter is copied to the heap on every call when the escape analysis has a false positive (`&p.buf[i]`, a Result call through an interface field or a `&T` receiver); one `memdup` per call, unreported by `-warn-about-allocs`

vlang/v#30856 · opened

on Oct 18, 2026

V3: module cache makes a large project compile three times on every build

vlang/v#30853 · opened

on Oct 18, 2026

V3: ORM insert of an inline struct literal silently inserts nothing

vlang/v#30852 · opened

on Oct 18, 2026

modules.vlang.io stale since 4 October 2026; recent module docs CI runs fail at Build V

vlang/v#30834 · opened

on Oct 18, 2026

`v3 ownership/autofree: clearing a pointer-referenced map[K]SumType emits field access on the value pointer`

vlang/v#30827 · opened

on Oct 18, 2026

`v3 ownership/autofree: match scope drops are misaligned and free() a local before its declaration`

vlang/v#30826 · opened

on Oct 18, 2026

Cannot use html decoding in UI2

vlang/v#30820 · opened

on Oct 18, 2026

[os] pipeset and fds declared as [N]int instead of [N]i32 causes deadlock in C.pipe / stdout_slurp on 64-bit Linux (V 0.5.2)

vlang/v#30819 · opened

on Oct 18, 2026

2

[Bug] Compiler fails on `map.keys().sort()` inside a `match` smart-cast branch

vlang/v#30808 · opened

on Oct 18, 2026

veb: make openapi_json feature-complete and controller-aware

vlang/v#30807 · opened

on Oct 18, 2026

1

build: enabling `-ownership` makes `just build` fail with 193 move errors

vlang/v#30806 · opened

on Oct 18, 2026

-autofree: toml still emits undeclared replacement cleanup on 514bbdf (incomplete #30631 fix)

vlang/v#30804 · opened

on Oct 18, 2026

Array interpolation of []T resolves T to a same-named enum from another module

vlang/v#30799 · opened

on Oct 17, 2026

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Issues

builtin.closure: missing @[has_globals] in closure_windows.c.v and closure_nix.c.v leads to global error without -enable-globals

mcp: server-initiated requests over stdio wait for the next client message, and no hook sees notifications

`map.delete` keeps the deleted value reachable: the GC never frees what it points to

checker/cgen: compatible `fn C.` redeclarations across modules (`&u8` vs `voidptr` return) still type every call by one declaration; pointer arithmetic breaks depending on imports (follow-up to #27791)

A `mut map` receiver method from another module, called on a `shared` map, receives the `shared` wrapper instead of the map, causing a segfault

`spawn f(mut x)` where `x` is `&T` and the parameter is `mut x &T` passes the wrong pointer, causing a segfault

Iterating `&map[K]Enum` yields `&Enum`, and the comparison is silently wrong in 0.5.1

`spawn f(shared &m)` is rejected with a nonsensical hint

`cannot use map[string]T as &map in argument 1 to map__get` for nested assignment with `@[heap]` structs

C error when iterating a `shared` map parameter inside `lock`

`net.http`: idle pooled connections are never reaped — `idle_timeout` is only checked on reuse

veb (fasthttp, Linux): connection buffers never shrink, and closed connections are pooled forever

transform: since #30793, a by-value parameter is copied to the heap on every call when the escape analysis has a false positive (`&p.buf[i]`, a Result call through an interface field or a `&T` receiver); one `memdup` per call, unreported by `-warn-about-allocs`

V3: module cache makes a large project compile three times on every build

V3: ORM insert of an inline struct literal silently inserts nothing

modules.vlang.io stale since 4 October 2026; recent module docs CI runs fail at Build V

`v3 ownership/autofree: clearing a pointer-referenced map[K]SumType emits field access on the value pointer`

`v3 ownership/autofree: match scope drops are misaligned and free() a local before its declaration`

Cannot use html decoding in UI2

[os] pipeset and fds declared as [N]int instead of [N]i32 causes deadlock in C.pipe / stdout_slurp on 64-bit Linux (V 0.5.2)

[Bug] Compiler fails on `map.keys().sort()` inside a `match` smart-cast branch

veb: make openapi_json feature-complete and controller-aware

build: enabling `-ownership` makes `just build` fail with 193 move errors

-autofree: toml still emits undeclared replacement cleanup on 514bbdf (incomplete #30631 fix)

Array interpolation of []T resolves T to a same-named enum from another module