luau/fuzz/typeck.cpp
vegorov-rbx d141a5c48d
Sync to upstream/release/572 (#899)
* Fixed exported types not being suggested in autocomplete
* `T...` is now convertible to `...any` (Fixes
https://github.com/Roblox/luau/issues/767)
* Fixed issue with `T?` not being convertible to `T | T` or `T?`
(sometimes when internal pointer identity is different)
* Fixed potential crash in missing table key error suggestion to use a
similar existing key
* `lua_topointer` now returns a pointer for strings

C++ API Changes:
* `prepareModuleScope` callback has moved from TypeChecker to Frontend
* For LSPs, AstQuery functions (and `isWithinComment`) can be used
without full Frontend data

A lot of changes in our two experimental components as well.

In our work on the new type-solver, the following issues were fixed:
* Fixed table union and intersection indexing
* Correct custom type environments are now used
* Fixed issue with values of `free & number` type not accepted in
numeric operations

And these are the changes in native code generation (JIT):
* arm64 lowering is almost complete with support for 99% of IR commands
and all fastcalls
* Fixed x64 assembly encoding for extended byte registers
* More external x64 calls are aware of register allocator
* `math.min`/`math.max` with more than 2 arguments are now lowered to IR
as well
* Fixed correctness issues with `math` library calls with multiple
results in variadic context and with x64 register conflicts
* x64 register allocator learnt to restore values from VM memory instead
of always using stack spills
* x64 exception unwind information now supports multiple functions and
fixes function start offset in Dwarf2 info
2023-04-14 11:06:22 -07:00

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C++

// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#include <string>
#include "Luau/BuiltinDefinitions.h"
#include "Luau/Common.h"
#include "Luau/Frontend.h"
#include "Luau/ModuleResolver.h"
#include "Luau/Parser.h"
LUAU_FASTINT(LuauTypeInferRecursionLimit)
LUAU_FASTINT(LuauTypeInferTypePackLoopLimit)
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, size_t Size)
{
FInt::LuauTypeInferRecursionLimit.value = 100;
FInt::LuauTypeInferTypePackLoopLimit.value = 100;
Luau::ParseOptions options;
Luau::Allocator allocator;
Luau::AstNameTable names(allocator);
Luau::ParseResult parseResult = Luau::Parser::parse(reinterpret_cast<const char*>(Data), Size, names, allocator, options);
// "static" here is to accelerate fuzzing process by only creating and populating the type environment once
static Luau::NullFileResolver fileResolver;
static Luau::NullConfigResolver configResolver;
static Luau::Frontend frontend{&fileResolver, &configResolver};
static int once = (Luau::registerBuiltinGlobals(frontend, frontend.globals, false), 1);
(void)once;
static int once2 = (Luau::freeze(frontend.globals.globalTypes), 1);
(void)once2;
if (parseResult.errors.empty())
{
Luau::TypeChecker typeck(frontend.globals.globalScope, &frontend.moduleResolver, frontend.builtinTypes, &frontend.iceHandler);
Luau::SourceModule module;
module.root = parseResult.root;
module.mode = Luau::Mode::Nonstrict;
try
{
typeck.check(module, Luau::Mode::Nonstrict);
}
catch (std::exception&)
{
// This catches internal errors that the type checker currently (unfortunately) throws in some cases
}
}
return 0;
}