vlang/v

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Simple, fast, safe, compiled language for developing maintainable software. Compiles itself in <1s with zero library dependencies. Supports automatic C => V translation. https://vlang.io

Stars: 37.9k
Forks: 2.3k
Open beginner issues: 0
Indexed issues: 68
Avg merge: 17h 8m
Merged PRs (30d): 448

Dominant language: V
License: MIT
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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66 open issues indexed

Default value in parameter causes crash when its an union Open

Bug

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

vlang/v#28800 · Opened Sep 19, 2026
v test: the runner evaluates `// vtest build:` against an empty fact set since V1 was removed Open

vlang/v#28798 · 1 assignee · Opened Sep 19, 2026
new compiler: non-existent enum value is accepted silently (`Enum.value` compiles to 0, `.value` in a match arm is accepted) Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

vlang/v#28796 · Opened Sep 19, 2026
new compiler: capturing closure assigned to a field through a cast pointer is destroyed at scope exit (closure_try_destroy) -> SIGSEGV on call Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

vlang/v#28795 · Opened Sep 19, 2026
checker: `-no-parallel` with a `-prealloc` compiler skips whole-program passes (deprecated `byte` not reported, goto label errors degrade to C errors) Open

Bug

vlang/v#28792 · 1 assignee · Opened Sep 19, 2026
C error with multiple structs that contain the same method/property name Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 65/100

vlang/v#28784 · Opened Sep 19, 2026
feat: format thousands Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

vlang/v#28765 · 1 reaction · Opened Sep 19, 2026
v3: false "field ... must be initialized" for @[required] fields of an initialized embedded struct Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

vlang/v#28762 · 1 reaction · Opened Sep 19, 2026
new compiler: `v -shared` exports all functions (private, non-exported and builtin), not only `@[export]` ones Open

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

vlang/v#28749 · Opened Sep 18, 2026
checker: `.byte` directive inside an `asm` block is reported as the deprecated `byte` type Open

Bug

vlang/v#28739 · 1 assignee · Opened Sep 18, 2026
cgen: top-level `asm` block is not emitted by V3 (undefined reference to its label) Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 72/100

vlang/v#28738 · Opened Sep 18, 2026
checker: `!` in a `test_` fn of an architecture-qualified test file (`foo_test.arm64.v`) is rejected Open

Bug

vlang/v#28736 · 1 assignee · Opened Sep 18, 2026
cmdexec: PeekNamedPipe call fails to compile with gcc on Windows (incompatible pointer type, since #28708) Open

Bug

vlang/v#28731 · 1 assignee · Opened Sep 18, 2026
v3 fails to compile gui showcase.v example Open

Bug

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

vlang/v#28694 · 2 comments · Opened Sep 17, 2026
v test reporter crashes with memory allocation failure (heap corruption) Open

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

vlang/v#28693 · Opened Sep 17, 2026
v3: parallel_parser_test.v fails on master (fallback parse pos mismatch; bench line asserted without -v) Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

vlang/v#28681 · Opened Sep 17, 2026
v3 cgen: no prototype emitted for a \n C.x\ called from a module const initializer (custom_str_test.v fails on master) Open

Bug

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

vlang/v#28679 · Opened Sep 17, 2026
v3: compiling \module types\ tests with \-d ownership\ never finishes (blocks \ test vlib/v/types/\) Open

Bug

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

vlang/v#28678 · Opened Sep 17, 2026
`v3 scoped monomorphize: SIGSEGV or wrong C when the memory-bounded path runs` Open

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

vlang/v#28640 · 1 reaction · Opened Sep 15, 2026
`v3: bare type names in generic calls are resolved outside the writing file's scope` Open

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

vlang/v#28639 · 1 reaction · Opened Sep 15, 2026
master: vc/v.c fails with GCC 16 (renameat implicit declaration under -std=c99) Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

vlang/v#28632 · 1 reaction · Opened Sep 15, 2026
master: vc/v.c fails to compile on macOS (SYS_getrandom undeclared) Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

vlang/v#28630 · Opened Sep 15, 2026
Time Is a Pointer in v3? Maps can't contain structs that might contain pointers? Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 62/100

vlang/v#28626 · 8 comments · Opened Sep 15, 2026
v3: every successful build leaves its '.<out>.v3cc.<pid>.*' C build directory behind on Windows (success path uses os.rmdir on a non-empty dir) Open

Bug

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

vlang/v#28620 · 3 reactions · Opened Sep 14, 2026
V fails to build with GC enabled on 32-bit powerpc: `v2(48980,0xf0403000) malloc: *** mmap(size=16777216) failed (error code=12)` Open

Bug

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

vlang/v#28612 · Opened Sep 14, 2026
Fallback after "v up" on windows 10 Open

Bug

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

vlang/v#28582 · 1 reaction · Opened Sep 13, 2026
vfmt: `v fmt` stopped inserting indentation for struct field attributes Open

Bug

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

vlang/v#28573 · Opened Sep 13, 2026
vfmt: `v fmt` stopped inserting indentation for trailing struct literals Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

vlang/v#28570 · 1 comment · Opened Sep 13, 2026
V Compilation Error Open

Bug

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

vlang/v#28566 · 1 comment · 2 reactions · Opened Sep 13, 2026
sokol_wayland doesn't work with the new compiler Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 50/100

vlang/v#28560 · Opened Sep 13, 2026
cmd/v: `macos_v3_test.v` and `macos_v3_external_fallback_test.v` fail on the `-old-compiler` tools lanes — `@VEXE` is `v1_fallback`, not the V3 dispatcher Open

Bug

Difficulty 4/5 3-5 days Newbie friendliness 64/100

vlang/v#28512 · Opened Sep 11, 2026
parser: comment after a blank line before `pub mut:` / `mut:` breaks struct parsing in `.parse_comments` mode (fails `v vet`, `v_parser_test.v` on master) Open

Bug

vlang/v#28500 · 1 assignee · Opened Sep 11, 2026
V3 reports bogus `unknown function` diagnostics for generic functions that call methods on a generic parameter, then silently falls back to V1 Open

Bug

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

vlang/v#28489 · 1 comment · 2 reactions · Opened Sep 11, 2026
cc: C source file passed via #flag is compiled as C++ due to uppercase .C Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 72/100

vlang/v#28480 · 2 comments · Opened Sep 10, 2026
Plan: OpenSSL 4.0.2 generated kernels to V-native assembly IR (#28447) Open

Feature/Enhancement Request

vlang/v#28468 · 1 comment · 1 assignee · Opened Sep 9, 2026
Prerequisite: harden raw assembly diagnostics and constant-time validation (#28447) Open

Feature/Enhancement Request

vlang/v#28467 · 1 comment · 1 assignee · Opened Sep 9, 2026
Follow-up: design a V-native assembler (#28447) Open

Feature/Enhancement Request

vlang/v#28458 · 2 comments · 1 assignee · Opened Sep 9, 2026
Plan: pure-V OpenSSL-compatible crypto with measured performance (#28447) Open

Feature/Enhancement Request

vlang/v#28457 · 5 comments · 1 assignee · Opened Sep 9, 2026
`v fmt` corrupts V ORM dynamic query-data blocks by appending `:` separators Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 72/100

vlang/v#28454 · 1 reaction · Opened Sep 9, 2026
asm: roadmap for hand-written crypto kernels — in-asm control flow, SIMD-scale blocks, whole-function asm Open

Feature/Enhancement Request

vlang/v#28447 · 2 comments · 3 reactions · 1 assignee · Opened Sep 8, 2026
fails to compile because of a missing field? Open

Bug

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

vlang/v#28437 · Opened Sep 7, 2026
`v3: `make`/`v self` fails to build `cmd/v` with GCC — "initializer element is not constant" in generated C` Open

Bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

vlang/v#28424 · 1 reaction · Opened Sep 7, 2026
net.ssl/net.mbedtls/net.quic: no default CA trust store — HTTPS/HTTP-3 requests without explicit verify: always fail cert verification Open

Feature/Enhancement Request

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

vlang/v#28405 · Opened Sep 6, 2026
Memory leak during V self-compilation and so on Open

Bug

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

vlang/v#28390 · 1 comment · 5 reactions · Opened Sep 5, 2026
Segfault in union-implementing-interface: uninitialized interface tag causes dereference of raw union bits Open

Bug

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

vlang/v#28388 · 1 reaction · Opened Sep 5, 2026
v3: self-built compiler (#28378) crashes on `import net.http`; V3 cannot build net.http on glibc 2.43 / gcc 16, previously masked by the V1 fallback Open

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

vlang/v#28384 · 1 reaction · Opened Sep 5, 2026
[Feature] Enhance V's Interoperability with C++ (Beyond extern "C" Wrappers) Open

Feature/Enhancement Request

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

vlang/v#28377 · 1 comment · Opened Sep 5, 2026
v3: false positive: "cannot use ... expected <fn-type alias>" for inline fn literal in a generic function Open

Bug

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

vlang/v#28181 · Opened Aug 26, 2026
v3: drop_owned_T_IError undeclared when builtin's ownership-drop for a boxed IError compiles through the module cache Open

Bug

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

vlang/v#28098 · Opened Aug 16, 2026
orm: explicit relationship loading with deep select Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

vlang/v#28038 · 3 comments · 2 reactions · Opened Aug 6, 2026

vlang/v

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