0.4.6

V 0.4.6

20 May 2024

Improvements in the language

• Experimental x.vweb is now veb, the official and recommended way to build web apps in V. Built on top of pico.v.
• autofree: -print_autofree_vars command line flag for printing variables autofree couldn't free
• Add @VMODHASH comptime variable to store the commit sha of a V module (#21091)
• Fix sumtype support for option variant types (#21101)
• Utilize new diff functions in errors (expected/found) (#21431)
• Add @[_linker_section] for global variables

Breaking changes

• checker: disallow initializing private struct fields outside structs module (#21183)
• vlib: update handling of imports whose symbols are not directly used in imported file, remove pub const is_used = 1 workarounds (#21160)
• net.ftp: allow to choose a different port than port 21 (change FTP.connect to accept host:port, not just a host address) (#21185)

Checker improvements/fixes

• Ambiguous expression notice for & << >>, similar to && ||
• Disallow using aliases of ?Type as !Type (#21128)
• Fix option checker arg validation for ptr passing on non expected ptr (#21087)
• Optimize option and result type check, add more typinfo to error details (#21105)
• Move error handling for any type to the checker to resolve parsing issues (#21146)
• Move error handling for user defined type duplicates to the checker to resolve parsing issues (#21147)
• Detect redundant ref when assigning call expr with ref return (#21141)
• Fix multi return using nil and voidptrfix (fix #17343) (#21144)
• Fix C struct embedded init fields checking (#21137)
• Remove resolved vfmt workaround and TODO (#21175)
• Move more match validation from the parser into the checker, add error for match without branches (#21181)
• Improve the error message for an unknown type (#21207)
• Allow passing none to fn f(arg ?&Type) { (fix #21213) (#21231)
• Fix -parallel-cc regression (part 1, workaround .filter(fn[c]) used in checker/orm.v) (#21238)
• Detect and error on unreachable code in loops, after continue and break statements (#21294)
• Disallow Result callbacks functions like map/filter/all/any (#21055)
• Fix missing check for or expr on string interpolation (#17566)
• Allow pass array as mut param to spawn fn (#21283)
• Turn array assign warning into error (#21341)
• Ignore last semicolon on or-expr (#21361)
• Disallow structs with @[params] attribute as mutable function parameters (#21206)
• Set auto Return pos correctly; cgen: autofree fix for optional returns
• Disallow invalid ptr operations (#21515)
• Fix wrong checking for heap struct (#21511)
• Allow alias enum flagged to have bit operations (#21532)
• Simplify, utilize pref.vroot (#21096)
• Fix option interface member checking when none is passed (#21509)

Parser improvements

• Fix option as possible match case for sumtype (#21079)
• orm: disallow invalid infix for where clause in delete and update (#21113)
• Fix case of falsely registering imports as used, remove unused imports (#21156)
• Remove redundant comments_mode field (#21198)
• Update file path fields; use more expressive name for file path, remove obsolete file_name_dir field (#21202)
• Add missing docstrings for vlib/v/ast/comptime_const_values.v functions (#21219)
• Allow struct init on for in Iterator{} { (fix #21179) (#21282)
• Fix for x in Iterator{} {, when there are no field initialisations (#21333)
• Add check for result type on chan init (#21363)
• Fix comptime panic for $tmpl("x.html"), when the template file contained % at the end (#21402)
• Parse string and array typ idx of ScopeVar and Ident (#21523)

Compiler internals

• v.util: use tmp instead of cache dir for temporary diff files (#21075)
• v.util: fix module lookup if module import parts end with the word modules (#21083)
• v.util: update githash to be able to get the githash of every passed project (#21178)
• v.util: improve detection for opendiff when automatically searching difftools (#21241)
• v.util: improve color_compare_files (#21247)
• v.util: improve find_diff_cmd: don't add spaces to result without env opts (#21242)
• v.util: fix diff coloring, add test (#21260)
• v.util: polish off diff utils after recent updates and fixes, add doc comments to pub fns (#21275)
• v.builder: suggest using v wipe-cache, when the object files are not recognized
• pref: be more conservative when generating code using -cross, allow for $if cross ? {
• builder: use cc enum in CcompilerOptions, fix cc detection, enable cc guessing without prod flag (#21370)
• pref: fix version flag handling (#21377)
• pref: make minor performance related changes / simplify (#21379)
• builder: simplify generic cc detection (#21380)
• pref: extract architecture related code into arch.c.v; rename pref.c.v to pref.v (#21387)
• pref: update os_from_string, add missing qnx, remove deprecated wasm options that used - instead of _ (#21390)
• v.util: rewrite diff module, deprecate old functions (#21403)
• v.util: fix color when auto tool is diff (#21435)
• v.util: make diff_test.v more robust to the color settings for the chosen local diff tool
• v.util: fix performance with v test-cleancode, when a slower diff tool is installed (#21447)
• v.util: remove fast path in diff.compare_text (#21458)
• v.pref: error for v file.v --unknown-option (#21391)

Standard library

• builtin,dlmalloc: fixes for v vlib/v/gen/c/coutput_test.v for gcc14.1, which is stricter
• Min window width and height
• builtin: str.last_index(); pref: hide-auto-str;
• toml: update the alexcrichton and BurntSushi repos to their successors toml-rs, and toml-test, record new exceptions (#21152)
• json: allow i32 decoding and encoding (#21162)
• json2: add ability to decode arrays (#21163)
• json2,checker,toml: allow field.typ compile-time checking with MatchExpr and add array of option checking (#21171)
• gg: draw_text with custom fonts
• x.json2: add a way to decode an array (#21186)
• os: clarify some doc comments (#21209)
• os: fix double free in os.get_raw_line() (used by os.input), with -autofree (#21204)
• time: extract Duration related code into duration.v (#21229)
• builtin: implement an at_exit(cb) wrapper for C.atexit (part 1) (#21254)
• os: format readme, fix markdown inside html (#21286)
• time: update unix time acces, fix issues related to deviating unix times (#21293)
• vlib: refactor empty string checks to use s == '' or s != '', instead of s.len == 0 (#21300)
• cli: update command_test.v (#21307)
• cli: extend control over defaults (#21308)
• thirdparty/sokol: bump _SGL_DEFAULT_MAX_VERTICES and _SGL_DEFAULT_MAX_COMMANDS again; mark them with __v_ start and __v_ end
• sync: add Gentoo paths for libatomic
• sync.stdatomic: add flag lines for gcc 14 too
• gg: make PenConfig fields public (#21353)
• builtin: fix undefined read s[0], from ''.is_lower() and ''.is_upper() in c7af2c2
• builtin: fix empty string lower / upper assert (#21358)
• cli: simplify flag parsing (#21392)
• os,runtime: workaround for v.c generation instability
• datatypes: fix for set - operator, union and intersection, now they no longer change the receiver (fix #21315) (#21362)
• sync.stdatomic: add paths for compilation with musl on Gentoo (#21400)
• os: fix os.execute stderr redirection (fix #20986) (#21404)
• time: fix the string representation of a negative Duration (#21407)
• cli: make program outputs using the cli module testable in cli/testdata (#21456)
• math.unsigned: permit _ separators in Uint128 decimal strings passed to uint128_from_dec_str (#21461)
• cli: fix default flags when their command equivalents are disabled (#21469)
• toml: simplify decode_quoted_escapes (#21472)
• os: fix join-path (#21425)
• builtin: simplify MessageError.msg() (#21524)
• all: replace usages of C.atexit(cb) with at_exit(cb) or {} (part 2) (#21263)
• math.unsigned: fix some Uint256 bugs and add tests (#21528)

Web

• Update mbedtls to latest compatible version v3.3.0 (#21118)
• veb.auth: a minor find_token fix
• Improve descriptions (#21155)
• ci: change listen ports in vweb_should_listen_on_both_ipv4_and_ipv6_by_default_test.v for both vweb and x.vweb, to reduce probability of network errors
• ci: mark both vweb and x.vweb versions of vweb_should_listen_on_both_ipv4_and_ipv6_by_default_test.v as flaky
• x.vweb: accept query params as method arguments (#21201)
• net.http.file: support index_file (index.html by default), and auto_index (true by default) parameters to file.serve()
• veb: copy x.vweb to veb, and make it work with comptime
• ci: fix the ubuntu-docker-musl job by skipping veb_app_test.v
• pref: support a shortcut: v -http for v -e "import net.http.file; file.serve()" .
• net: add a .port()! method for net.Addr (#21412)
• net: improve error message in .port()
• picoev: handle EAGAIN or EWOULDBLOCK quietly (#21480)
• net.unix: remove debug/trace eprintln (#21517)

ORM

• Add error for unchecked option multi return types, fix undefined behavior (#21106)

Database drivers

• db.mysql: fix invalid memory access in exec_one for returned rows with NULL fields (#21317)

C backend

• Enable autofree for option (#21051)
• Force C struct types which does not implement str() to be passed as ptr (#21054)
• Improve diagnostic information for ORM queries with invalid types
• Allow static call on generic type (#21071)
• Fix code generation for a struct field, having a type of fixed array of options field [5]?Type (#21082)
• Add the _M_ARM64 macro to endianness check (#21109)
• Fix return code when returning interface result type (fix #21115) (#21130)
• Fix const initialized with array (#21131)
• Fix infix array heap comparison (#21145)
• Fix C struct sumtype support (#21129)
• Add autofree comptime check (#21197)
• Fix comptime $if !autofree { (#21218)
• Allow for mut v in [12, 13, 14] { v+= 2 } (#21237)
• Allow op overload for type with generic parent (#21262)
• Optimize .map(), .any(), .filter() and .all() when using closure (#21256)
• Fix none passed to a generic option cast expression (fix #21215) (#21276)
• Fix -fsanitize=undefined used with []int{}.sort() (#21331)
• Fix myarr [1]C.mytype fixed array fields, for pub type C.mytype = voidptr (#21266)
• Fix comptime ref argument passing (#21335)
• Use the real C line number instead of #line 1000000 ... in the C footer with -g (#21388)
• Fine tune the line count reset for the C footer (fix off by 1 error in 00dd0bf)
• Fix array.delete_last call generation (#21439)
• Fix option ptr unwrapping (#21415)
• Fix C struct option alias printing (#21496)
• Handle auto deref var for index when the array element is an interface or a sumtype (#21491)
• Fix C struct init when it has default expr (#21510)
• Fix sumtype field naming (when they are the same as a C keyword) (#21527)

vfmt

• Update determining of struct field comments (#21066)
• Inform about invalid interop function bodies instead of removing them (#21070)
• Parse methods on JS interfaces, write JS method bodies (#21088)
• Improve module detection when formatting imports (#21134)
• Don't change paths when formatting imports (#21148)
• Use fixed size array for max_len const (#21140)
• Simplify const name formatting (#21143)
• Improve import processing, add test (#21172)
• Fix duplicates remove import comments (#21177)
• Extend import import alias reference map for submodules (#21200)

Tools

• doc: fix vup/vself replacement scripts (#21092)
• Prevent module updates during v build-tools, when VTEST_SANDBOXED_PACKAGING is set (#21094)
• ci: update the reference to the v-analyzer repo
• ci: retry all setup commands that need network access, till they succeed (so the CI jobs have less false positives) (#21103)
• changelog: escape @NAME entries, to avoid mentioning unrelated github accounts
• Add v retry apt update, intended to replace the retry.sh script, for more robust CI jobs (#21104)
• vpm: show the final path where a module is installed, improve color contrast for white on black terminal sessions
• vet: print help when passing no files or --help/-help flag after vet command (#21108)
• Fix v build-tools (it skipped all tools in subfolders of cmd/tools/ after 6a4f293) (#21120)
• .gitignore: ignore generated .NET files in bench/vectors (#21136)
• vet: optimize performance for path detection, when vetting files (#21139)
• vet: allow to overwrite excluded dirs (#21142)
• ci: increase wait time for the xvfb check, to reduce the chance of false positives
• Fix v run cmd/tools/measure/parser_speed.v file.v
• Add v run cmd/tools/measure/fmt_speed.v file.v
• ci: move build step for VPM site, into apps and modules ci, add concurrency config (#21191)
• tools.vpm: debug-log to $VMODULES/cache/vpm.log if not running in debug mode (#21192)
• vpm: optimize performance by adding filter when cloning (#21216)
• vdoc: don't add _docs directory when an out path is specified (#21233)
• ci: prefer dedicated tiggers for platform workflows, so sporadic fails can be retried quicker (#21251)
• v.util: improve code related to diff tool specified via environment, add check if the diff tool exists (#21240)
• vpm: check for git version before adding --also-filter-submodules flag (#21259)
• ci: add logging to .github/workflows/retry.sh
• Revise vtest-self.v: remove dead paths, fix json2 essential test path (#21267)
• Add check for unavailable files in vtest (#21272)
• ci: reactive app prod builds (#21295)
• ci: add a m1 runner for testing the prebuilt zips too
• ci: add workflow_run: event in prebuilt.yml
• ci: simplify prebuilt.yml, make it usable for manual runs too
• vpm: fix regression, so v install sdl && v run ~/.vmodules/sdl/setup.vsh works again
• ci: fix outdated_test.v (--unshallow is not needed now)
• ci: continue testing independent V apps, even if one fails, to get feedback for breaking changes faster (#21302)
• ci: optimize apps and modules (#21303)
• ci: test v ~/.vmodules/sdl/setup.vsh, to prevent future vpm regressions (#21306)
• ci: prevent unintended deployment workflow steps (#21313)
• Add a 2024.html page to https://fast.vlang.io/
• vdoc: rewrite and extend vdocignore (#21314)
• ci: fix the commit labels for the vc repo
• Support v run cmd/tools/oldv.v --show_VC_commit weekly.2024.03
• ci: use latest upstream discord.v in apps and modules test (#21322)
• vdoc: remove obsolete entries from .vdocignore (#21320)
• v: update linguist languages, add .vdocignore (#21321)
• ci: update deployment workflow (#21323)
• Allow for selectively running v test-self vlib/ and v test-self cmd/ (#21326)
• Rewrite test-self arg handling (#21327)
• ci: restore v install elliotchance.vsql in v_apps_and_modules_compile_ci.yml
• ci: use v retry -- cmd to replace .github/workflows/retry.sh cmd, where possible in v_apps_and_modules_compile_ci.yml (#21336)
• ci: update workflow conditions (#21338)
• Improve v symlink -githubci diagnostic message, when used outside CIs or with sudo (#21340)
• ci: update detection of workflow cancellation scenarios (#21342)
• Fix compiling vwhere with -cc gcc -cstrict (#21347)
• ci: remove the separate -gc boehm job (since -gc boehm is the default now) (#21352)
• ci: add a separate cmd/tools testing job (#21344)
• Update fast.v and fast_job.v to update docs.vlang.io and fast.vlang.io on each commit to master.
• Make fast.v more robust to independent remote changes in vlang/docs
• Utilize environment specific files for vsymlink (#21360)
• ci: update binary_artifact.yml (#21364)
• ci: add docker to tools workflow, update ignore paths (#21368)
• ci: split up vsl / vtl run, reducing the tool change CI time from ~19min to ~10min (#21372)
• ci: fix binary_artifact.yml (#21373)
• Refine check_os_api_parity.v (#21371)
• ci: update native backend ci matrix (#21375)
• ci: update symlink ci, add matrix (#21376)
• ci: workaround defer codegen failing with nested if blocks and -cstrict in vdoc_file_test.v
• ci: update detection of accidentally added gpl licenses (#21384)
• ci: set cancel-in-progress to false in bootstrapping_ci.yml to avoid false positives
• ci: do trigger bootstrapping_ci.yml periodically, but just on changes
• ci: speed up bootstrapping_ci.yml, by using the default tcc when possible
• ci: update bootstrapping_ci.yml trigger paths (#21394)
• ci: pass a good commit to oldv.v in bootstrapping_ci.yml (#21393)
• Be more verbose when doing v up in V folder produced by extracting a .zip release file
• Exclude thirdparty/tcc from the git clean operation, that vup does in case of a missing .git folder
• Protect from cleaning during v up, only ./v , not any matching folder
• Use proper ignore/exclude patterns in the git clean, that v up does
• Use more meaningful names in vup.v
• Be verbose, when a git commands that v up executes fails
• ci: add a v-up-works-ubuntu job, to ensure more robust v up runs (#21401)
• ci: ensure v master is available when trying to check out its commits to build oldv (#21414)
• Rewrite vet error handling (improve parser performance extend vvet) p1 (#21417)
• Move dynamic const array check from parser into vet (#21423)
• v.help: update help for fmt (#21430)
• Move array_init_one_val checks from parser into vet (#21422)
• Remove vet_errors and vet_notices from parser (#21424)
• ci: temporary fix for gitly compilation
• Remove vetting for spaces after / before parens (#21437)
• Add .github/workflows/show_manual_release_cmd.vsh, to make cross platform testing of the release process easier
• ci: merge docker_alpine and docker_ubuntu workflows in docker_ci.yml (#21446)
• Move now obsolete vlib vet module to cmd vet (#21445)
• Use parse_file, remove parse_vet_file (#21444)
• ci: update binary artifact workflow, add matrix (#21378)
• ci: add workflow_dispatch: to gen_vc_ci.yml
• ci: fix vinix_ci.yml by using ./v symlink -githubci in vinix_ci.yml
• ci: port changes from Vinix's check.yml at 8231e569 to vinix_ci.yml
• tools.vet: move error methods to vvet/errors.v (#21449)
• ci: reduce false negatives for tcp_test.v, retry it 3 times before failing
• Improve performance of v test-cleancode and v fmt -inprocess -verify . (#21450)
• Make ./v symlink work platform independent in CI (part 1) (#21453)
• ci: replace .github/workflows/retry.sh usages in the CI with the shorter v retry --, move v test-cleancode upwards to save time for unformatted PRs (#21452)
• Capitalize information output of v up (#21464)
• ci: use v symlink without -githubci for regular symlinking (#21455)
• ci: add a linter for the .yml workflow files (#21459)
• ci: update symlink ci, extend tested cases (#21466)
• tools.vet: update diff comparison in vet_test.v (#21457)
• Call mkdir_all before set_output_path to avoid a vpm panic when ~/.vmodules/cache does not exist (#21463)
• ci: make issue template title consistent, fix linter error regarding labels (#21460)
• tools.vet: reduce nesting in vet_fn_documentation, skip vetting empty lines (#21465)
• Print info to use v symlink instead of v symlink -githubci (#21471)
• Move _test.v files for vdoc at the same level (#21473)
• ci: update the helper script, for getting the most recent sqlite-amalgamation-3380200.zip (#21474)
• vdoc: fix handling of .vdocignore files in subdirectories (#21514)
• ci: run build-module-docs, when changes to the source of the v doc tool happen too
• ci: use g++ not g++-11 in misc-tooling (g++-11 can not be found and installed on the CI runner anymore for some reason)
• ci: update g++ to g++-10 in other_ci.yml, add workflow_dispatch: trigger for easier local future diagnostic
• vdoc: improve vdocignore file handling by walking all .vdocignore sub-paths in IgnoreRules.get, add test (#21521)
• ci: run v fmt -w cmd/tools/vdoc/vdoc_test.v
• ci: make sure that unformatted code in just cmd/ is not allowed
• ci: mark again tcp_test.v as flaky (it had 3 unrelated failures on the CI over the last week)
• v: vet for empty string conditions (#21529)
• tools.vet: add notice for empty strings conditions (#21421)

Operating System support

• ci: improve test robustness on windows (#21116)
• v.pkgconfig: add pkgconfig path /usr/libdata/pkgconfig for FreeBSD base packages (#21151)
• v.util: add diff tool color support detection (tested on linux and freebsd) (#21244)
• v.util.diff: return diff options with the diff command for FreeBSD/OpenBSD (#21271)
• v.pkgconfig: fix load_paths with ; split char on windows (#21291)
• Fix vpm on macos, when using the bundled git executable (#21292)
• ci: fix the bundled tcc for macos arm64 (#21299)
• ci: update the runner for build-macos-arm64 to macos-14 too, so it runs on M1
• Fix hot code reloading on windows (#21351)
• Fix building vpm on the FreeBSD instance, that runs fast.v
• Fix v install for the FreeBSD instance that updates docs.vlang.io .
• ci: use macos-13 for cross_ci.yml to force the old non m1 runner
• v.builder: update macos->linux cross compile message (~22MB -> ~77MB)
• v.pref: fix new pref test on FreeBSD (#21385)
• ci: stop earlier on vc/v.c files, that may break on systems != linux (#21397)
• Fix compilation on macos-arm with -cstrict; run macos ci also on the arm runner (#21408)
• ci: use v instead of ./v in the platform linux/macos/windows/_ci.yml files (#21454)
• ci: add a retry to vcreate_init_test.v (it is sporadically flaky on macos)
• sync,os,thirdparty: fix cross compilation from macos to windows (#21484)
• os: rename os_structs_stat_windows.v to os_structs_stat_windows.c.v to fix v -Wimpure-v -os windows vlib/os/os_stat_test.v
• Default to -cc clang on FreeBSD in cmd/tools/vtest_test.v (#21534)