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Merge pull request 'rework fuzz testing to be smith based' (#31205) from gooncreeper/zig:integrated-smith into master

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Reviewed-on: https://codeberg.org/ziglang/zig/pulls/31205
Reviewed-by: Andrew Kelley <andrew@ziglang.org>
This commit is contained in:
Andrew Kelley 2026-02-25 20:23:36 +01:00
commit e0173c2ce0
29 changed files with 3411 additions and 1551 deletions
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6
test/standalone/libfuzzer/main.zig
View file

@ -2,9 +2,7 @@ const std = @import("std");
const abi = std.Build.abi.fuzz;
const native_endian = @import("builtin").cpu.arch.endian();
fn testOne(in: abi.Slice) callconv(.c) void {
std.debug.assertReadable(in.toSlice());
}
fn testOne() callconv(.c) void {}
pub fn main(init: std.process.Init) !void {
const gpa = init.gpa;
@ -19,7 +17,7 @@ pub fn main(init: std.process.Init) !void {
defer cache_dir.close(io);
abi.fuzzer_init(.fromSlice(cache_dir_path));
abi.fuzzer_init_test(testOne, .fromSlice("test"));
abi.fuzzer_set_test(testOne, .fromSlice("test"));
abi.fuzzer_new_input(.fromSlice(""));
abi.fuzzer_new_input(.fromSlice("hello"));

23
test/tests.zig
View file

@ -2310,7 +2310,7 @@ pub fn addCliTests(b: *std.Build) *Step {
return step;
}
const ModuleTestOptions = struct {
pub const ModuleTestOptions = struct {
test_filters: []const []const u8,
test_target_filters: []const []const u8,
test_extra_targets: bool,
@ -2319,7 +2319,7 @@ const ModuleTestOptions = struct {
desc: []const u8,
optimize_modes: []const OptimizeMode,
include_paths: []const []const u8,
test_default_only: bool,
test_only: ?TestOnly,
skip_single_threaded: bool,
skip_non_native: bool,
skip_spirv: bool,
@ -2335,20 +2335,31 @@ const ModuleTestOptions = struct {
max_rss: usize = 0,
no_builtin: bool = false,
build_options: ?*Step.Options = null,
pub const TestOnly = union(enum) {
default: void,
fuzz: OptimizeMode,
};
};
pub fn addModuleTests(b: *std.Build, options: ModuleTestOptions) *Step {
const step = b.step(b.fmt("test-{s}", .{options.name}), options.desc);
if (options.test_default_only) {
const test_target = &test_targets[0];
if (options.test_only) |test_only| {
const test_target: TestTarget = switch (test_only) {
.default => test_targets[0],
.fuzz => |optimize| .{
.optimize_mode = optimize,
.use_llvm = true,
},
};
const resolved_target = b.resolveTargetQuery(test_target.target);
const triple_txt = resolved_target.query.zigTriple(b.allocator) catch @panic("OOM");
addOneModuleTest(b, step, test_target, &resolved_target, triple_txt, options);
return step;
}
for_targets: for (&test_targets) |*test_target| {
for_targets: for (test_targets) |test_target| {
if (test_target.skip_modules.len > 0) {
for (test_target.skip_modules) |skip_mod| {
if (std.mem.eql(u8, options.name, skip_mod)) continue :for_targets;
@ -2425,7 +2436,7 @@ pub fn addModuleTests(b: *std.Build, options: ModuleTestOptions) *Step {
fn addOneModuleTest(
b: *std.Build,
step: *Step,
test_target: *const TestTarget,
test_target: TestTarget,
resolved_target: *const std.Build.ResolvedTarget,
triple_txt: []const u8,
options: ModuleTestOptions,