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luau/tests/conformance/buffers.lua
Andy Friesen 74c532053f
Sync to upstream/release/604 (#1106) 
New Solver

* New algorithm for inferring the types of locals that have no
annotations. This
algorithm is very conservative by default, but is augmented with some
control
  flow awareness to handle most common scenarios.
* Fix bugs in type inference of tables
* Improve performance of by switching out standard C++ containers for
`DenseHashMap`
* Infrastructure to support clearer error messages in strict mode

Native Code Generation

* Fix a lowering issue with buffer.writeu8 and 0x80-0xff values: A
constant
  argument wasn't truncated to the target type range and that causes an
  assertion failure in `build.mov`.
* Store full lightuserdata value in loop iteration protocol lowering
* Add analysis to compute function bytecode distribution
* This includes a class to analyze the bytecode operator distribution
per
function and a CLI tool that produces a JSON report. See the new cmake
      target `Luau.Bytecode.CLI`

---------

Co-authored-by: Aaron Weiss <aaronweiss@roblox.com>
Co-authored-by: Alexander McCord <amccord@roblox.com>
Co-authored-by: Andy Friesen <afriesen@roblox.com>
Co-authored-by: Aviral Goel <agoel@roblox.com>
Co-authored-by: Lily Brown <lbrown@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
2023-11-17 10:46:18 -08:00

626 lines
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-- This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
print("testing byte buffer library")
function call(fn, ...)
local ok, res = pcall(fn, ...)
assert(ok)
return res
end
function ecall(fn, ...)
local ok, err = pcall(fn, ...)
assert(not ok)
return err:sub((err:find(": ") or -1) + 2, #err)
end
local function simple_byte_reads()
local b = buffer.create(1024)
assert(buffer.len(b) == 1024)
assert(buffer.readi8(b, 5) == 0)
buffer.writei8(b, 10, 32)
assert(buffer.readi8(b, 10) == 32)
buffer.writei8(b, 15, 5)
buffer.writei8(b, 14, 4)
buffer.writei8(b, 13, 3)
buffer.writei8(b, 12, 2)
buffer.writei8(b, 11, 1)
assert(buffer.readi8(b, 11) == 1)
assert(buffer.readi8(b, 12) == 2)
assert(buffer.readi8(b, 13) == 3)
assert(buffer.readi8(b, 14) == 4)
assert(buffer.readi8(b, 15) == 5)
local x = buffer.readi8(b, 14) + buffer.readi8(b, 13)
assert(x == 7)
buffer.writei8(b, 16, x)
end
simple_byte_reads()
local function offset_byte_reads(start: number)
local b = buffer.create(1024)
buffer.writei8(b, start, 32)
assert(buffer.readi8(b, start) == 32)
buffer.writei8(b, start + 5, 5)
buffer.writei8(b, start + 4, 4)
buffer.writei8(b, start + 3, 3)
buffer.writei8(b, start + 2, 2)
buffer.writei8(b, start + 1, 1)
assert(buffer.readi8(b, start + 1) == 1)
assert(buffer.readi8(b, start + 2) == 2)
assert(buffer.readi8(b, start + 3) == 3)
assert(buffer.readi8(b, start + 4) == 4)
assert(buffer.readi8(b, start + 5) == 5)
local x = buffer.readi8(b, start + 4) + buffer.readi8(b, start + 3)
assert(x == 7)
end
offset_byte_reads(5)
offset_byte_reads(30)
local function simple_float_reinterpret()
local b = buffer.create(1024)
buffer.writei32(b, 10, 0x3f800000)
local one = buffer.readf32(b, 10)
assert(one == 1.0)
buffer.writef32(b, 10, 2.75197)
local magic = buffer.readi32(b, 10)
assert(magic == 0x40302047)
buffer.writef32(b, 10, one)
local magic2 = buffer.readi32(b, 10)
assert(magic2 == 0x3f800000)
end
simple_float_reinterpret()
local function simple_double_reinterpret()
local b = buffer.create(1024)
buffer.writei32(b, 10, 0x00000000)
buffer.writei32(b, 14, 0x3ff00000)
local one = buffer.readf64(b, 10)
assert(one == 1.0)
buffer.writef64(b, 10, 1.437576533064206)
local magic1 = buffer.readi32(b, 10)
local magic2 = buffer.readi32(b, 14)
assert(magic1 == 0x40302010)
assert(magic2 == 0x3ff70050)
buffer.writef64(b, 10, one)
local magic3 = buffer.readi32(b, 10)
local magic4 = buffer.readi32(b, 14)
assert(magic3 == 0x00000000)
assert(magic4 == 0x3ff00000)
end
simple_double_reinterpret()
local function simple_string_ops()
local b = buffer.create(1024)
buffer.writestring(b, 15, " world")
buffer.writestring(b, 10, "hello")
buffer.writei8(b, 21, string.byte('!'))
assert(buffer.readstring(b, 10, 12) == "hello world!")
buffer.writestring(b, 10, "hellommm", 5)
assert(buffer.readstring(b, 10, 12) == "hello world!")
buffer.writestring(b, 10, string.rep("hellommm", 1000), 5)
assert(buffer.readstring(b, 10, 12) == "hello world!")
end
simple_string_ops()
local function simple_copy_ops()
local b1 = buffer.create(1024)
local b2 = buffer.create(1024)
buffer.writestring(b1, 200, "hello")
buffer.writestring(b1, 100, "world")
buffer.copy(b1, 300, b1, 100, 5)
buffer.writei8(b2, 35, string.byte(' '))
buffer.writei8(b2, 41, string.byte('!'))
buffer.copy(b2, 30, b1, 200, 5)
buffer.copy(b2, 36, b1, 300, 5)
assert(buffer.readstring(b2, 30, 12) == "hello world!")
local b3 = buffer.create(9)
buffer.writestring(b3, 0, "say hello")
buffer.copy(b2, 36, b3, 4)
assert(buffer.readstring(b2, 30, 12) == "hello hello!")
local b4 = buffer.create(5)
buffer.writestring(b4, 0, "world")
buffer.copy(b2, 36, b4)
assert(buffer.readstring(b2, 30, 12) == "hello world!")
buffer.writestring(b1, 200, "abcdefgh");
buffer.copy(b1, 200, b1, 202, 6)
assert(buffer.readstring(b1, 200, 8) == "cdefghgh")
buffer.copy(b1, 202, b1, 200, 6)
assert(buffer.readstring(b1, 200, 8) == "cdcdefgh")
end
simple_copy_ops()
-- bounds checking
local function createchecks()
assert(ecall(function() buffer.create(-1) end) == "invalid argument #1 to 'create' (size)")
assert(ecall(function() buffer.create(-1000000) end) == "invalid argument #1 to 'create' (size)")
end
createchecks()
local function boundchecks()
local b = buffer.create(1024)
assert(call(function() return buffer.readi8(b, 1023) end) == 0)
assert(ecall(function() buffer.readi8(b, 1024) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, -100000) end) == "buffer access out of bounds")
call(function() buffer.writei8(b, 1023, 0) end)
assert(ecall(function() buffer.writei8(b, 1024, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, -100000, 0) end) == "buffer access out of bounds")
-- i16
assert(call(function() return buffer.readi16(b, 1022) end) == 0)
assert(ecall(function() buffer.readi16(b, 1023) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, -100000) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, 0x7fffffff) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, 0x7ffffffe) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, 0x7ffffffd) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, 0x80000000) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, 0x0fffffff) end) == "buffer access out of bounds")
call(function() buffer.writei16(b, 1022, 0) end)
assert(ecall(function() buffer.writei16(b, 1023, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, -100000, 0) end) == "buffer access out of bounds")
-- i32
assert(call(function() return buffer.readi32(b, 1020) end) == 0)
assert(ecall(function() buffer.readi32(b, 1021) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, -100000) end) == "buffer access out of bounds")
call(function() buffer.writei32(b, 1020, 0) end)
assert(ecall(function() buffer.writei32(b, 1021, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, -100000, 0) end) == "buffer access out of bounds")
-- f32
assert(call(function() return buffer.readf32(b, 1020) end) == 0)
assert(ecall(function() buffer.readf32(b, 1021) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, -100000) end) == "buffer access out of bounds")
call(function() buffer.writef32(b, 1020, 0) end)
assert(ecall(function() buffer.writef32(b, 1021, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, -100000, 0) end) == "buffer access out of bounds")
-- f64
assert(call(function() return buffer.readf64(b, 1016) end) == 0)
assert(ecall(function() buffer.readf64(b, 1017) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, -100000) end) == "buffer access out of bounds")
call(function() buffer.writef64(b, 1016, 0) end)
assert(ecall(function() buffer.writef64(b, 1017, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, -100000, 0) end) == "buffer access out of bounds")
-- string
assert(call(function() return buffer.readstring(b, 1016, 8) end) == "\0\0\0\0\0\0\0\0")
assert(ecall(function() buffer.readstring(b, 1017, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, -1, -8) end) == "invalid argument #3 to 'readstring' (size)")
assert(ecall(function() buffer.readstring(b, -100000, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, -100000, 8) end) == "buffer access out of bounds")
call(function() buffer.writestring(b, 1016, "abcdefgh") end)
assert(ecall(function() buffer.writestring(b, 1017, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, -1, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, -100000, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, 100, "abcd", -5) end) == "invalid argument #4 to 'writestring' (count)")
assert(ecall(function() buffer.writestring(b, 100, "abcd", 50) end) == "string length overflow")
-- copy
assert(ecall(function() buffer.copy(b, 30, b, 200, 1000) end) == "buffer access out of bounds")
assert(ecall(function() buffer.copy(b, 30, b, 200, -5) end) == "buffer access out of bounds")
assert(ecall(function() buffer.copy(b, 30, b, 2000, 10) end) == "buffer access out of bounds")
assert(ecall(function() buffer.copy(b, 30, b, -1, 10) end) == "buffer access out of bounds")
assert(ecall(function() buffer.copy(b, 30, b, -10, 10) end) == "buffer access out of bounds")
assert(ecall(function() buffer.copy(b, 30, b, -100000, 10) end) == "buffer access out of bounds")
local b2 = buffer.create(1024)
assert(ecall(function() buffer.copy(b, -200, b, 200, 200) end) == "buffer access out of bounds")
assert(ecall(function() buffer.copy(b, 825, b, 200, 200) end) == "buffer access out of bounds")
end
boundchecks()
local function boundchecksnonconst(size, minus1, minusbig, intmax)
local b = buffer.create(size)
assert(call(function() return buffer.readi8(b, size-1) end) == 0)
assert(ecall(function() buffer.readi8(b, size) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, minusbig) end) == "buffer access out of bounds")
call(function() buffer.writei8(b, size-1, 0) end)
assert(ecall(function() buffer.writei8(b, size, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, minusbig, 0) end) == "buffer access out of bounds")
-- i16
assert(call(function() return buffer.readi16(b, size-2) end) == 0)
assert(ecall(function() buffer.readi16(b, size-1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, minusbig) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, intmax) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, intmax-1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, intmax-2) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, intmax+1) end) == "buffer access out of bounds")
call(function() buffer.writei16(b, size-2, 0) end)
assert(ecall(function() buffer.writei16(b, size-1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, minusbig, 0) end) == "buffer access out of bounds")
-- i32
assert(call(function() return buffer.readi32(b, size-4) end) == 0)
assert(ecall(function() buffer.readi32(b, size-3) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, minusbig) end) == "buffer access out of bounds")
call(function() buffer.writei32(b, size-4, 0) end)
assert(ecall(function() buffer.writei32(b, size-3, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, minusbig, 0) end) == "buffer access out of bounds")
-- f32
assert(call(function() return buffer.readf32(b, size-4) end) == 0)
assert(ecall(function() buffer.readf32(b, size-3) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, minusbig) end) == "buffer access out of bounds")
call(function() buffer.writef32(b, size-4, 0) end)
assert(ecall(function() buffer.writef32(b, size-3, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, minusbig, 0) end) == "buffer access out of bounds")
-- f64
assert(call(function() return buffer.readf64(b, size-8) end) == 0)
assert(ecall(function() buffer.readf64(b, size-7) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, minusbig) end) == "buffer access out of bounds")
call(function() buffer.writef64(b, size-8, 0) end)
assert(ecall(function() buffer.writef64(b, size-7, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, minusbig, 0) end) == "buffer access out of bounds")
-- string
assert(call(function() return buffer.readstring(b, size-8, 8) end) == "\0\0\0\0\0\0\0\0")
assert(ecall(function() buffer.readstring(b, size-7, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, minus1, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, minusbig, 8) end) == "buffer access out of bounds")
call(function() buffer.writestring(b, size-8, "abcdefgh") end)
assert(ecall(function() buffer.writestring(b, size-7, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, minus1, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, minusbig, "abcdefgh") end) == "buffer access out of bounds")
end
boundchecksnonconst(1024, -1, -100000, 0x7fffffff)
local function boundcheckssmall()
local b = buffer.create(1)
assert(call(function() return buffer.readi8(b, 0) end) == 0)
assert(ecall(function() buffer.readi8(b, 1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, -1) end) == "buffer access out of bounds")
call(function() buffer.writei8(b, 0, 0) end)
assert(ecall(function() buffer.writei8(b, 1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, -1, 0) end) == "buffer access out of bounds")
-- i16
assert(ecall(function() buffer.readi16(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, -2) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, 0, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, -2, 0) end) == "buffer access out of bounds")
-- i32
assert(ecall(function() buffer.readi32(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, -4) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, 0, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, -4, 0) end) == "buffer access out of bounds")
-- f32
assert(ecall(function() buffer.readf32(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, -4) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, 0, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, -4, 0) end) == "buffer access out of bounds")
-- f64
assert(ecall(function() buffer.readf64(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, -8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, 0, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, -7, 0) end) == "buffer access out of bounds")
-- string
assert(ecall(function() buffer.readstring(b, 0, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, -1, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, -8, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, 0, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, -1, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, -7, "abcdefgh") end) == "buffer access out of bounds")
end
boundcheckssmall()
local function boundcheckssmallnonconst(zero, one, minus1, minus2, minus4, minus7, minus8)
local b = buffer.create(1)
assert(call(function() return buffer.readi8(b, 0) end) == 0)
assert(ecall(function() buffer.readi8(b, one) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, minus1) end) == "buffer access out of bounds")
call(function() buffer.writei8(b, 0, 0) end)
assert(ecall(function() buffer.writei8(b, one, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, minus1, 0) end) == "buffer access out of bounds")
-- i16
assert(ecall(function() buffer.readi16(b, zero) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, minus2) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, zero, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei16(b, minus2, 0) end) == "buffer access out of bounds")
-- i32
assert(ecall(function() buffer.readi32(b, zero) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, minus4) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, zero, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei32(b, minus4, 0) end) == "buffer access out of bounds")
-- f32
assert(ecall(function() buffer.readf32(b, zero) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, minus4) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, zero, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef32(b, minus4, 0) end) == "buffer access out of bounds")
-- f64
assert(ecall(function() buffer.readf64(b, zero) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, minus1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, minus8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, zero, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, minus1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writef64(b, minus7, 0) end) == "buffer access out of bounds")
-- string
assert(ecall(function() buffer.readstring(b, zero, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, minus1, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, minus8, 8) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, zero, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, minus1, "abcdefgh") end) == "buffer access out of bounds")
assert(ecall(function() buffer.writestring(b, minus7, "abcdefgh") end) == "buffer access out of bounds")
end
boundcheckssmallnonconst(0, 1, -1, -2, -4, -7, -8)
local function boundchecksempty()
local b = buffer.create(0) -- useless, but probably more generic
assert(ecall(function() buffer.readi8(b, 1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi8(b, -1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, 1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, 0, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.writei8(b, -1, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi16(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readi32(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf32(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readf64(b, 0) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, 0, 1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.readstring(b, 0, 8) end) == "buffer access out of bounds")
end
boundchecksempty()
local function intuint()
local b = buffer.create(32)
buffer.writeu32(b, 0, 0xffffffff)
assert(buffer.readi8(b, 0) == -1)
assert(buffer.readu8(b, 0) == 255)
assert(buffer.readi16(b, 0) == -1)
assert(buffer.readu16(b, 0) == 65535)
assert(buffer.readi32(b, 0) == -1)
assert(buffer.readu32(b, 0) == 4294967295)
buffer.writei32(b, 0, -1)
assert(buffer.readi8(b, 0) == -1)
assert(buffer.readu8(b, 0) == 255)
assert(buffer.readi16(b, 0) == -1)
assert(buffer.readu16(b, 0) == 65535)
assert(buffer.readi32(b, 0) == -1)
assert(buffer.readu32(b, 0) == 4294967295)
buffer.writei16(b, 0, 65535)
buffer.writei16(b, 2, -1)
assert(buffer.readi8(b, 0) == -1)
assert(buffer.readu8(b, 0) == 255)
assert(buffer.readi16(b, 0) == -1)
assert(buffer.readu16(b, 0) == 65535)
assert(buffer.readi32(b, 0) == -1)
assert(buffer.readu32(b, 0) == 4294967295)
buffer.writeu16(b, 0, 65535)
buffer.writeu16(b, 2, -1)
assert(buffer.readi8(b, 0) == -1)
assert(buffer.readu8(b, 0) == 255)
assert(buffer.readi16(b, 0) == -1)
assert(buffer.readu16(b, 0) == 65535)
assert(buffer.readi32(b, 0) == -1)
assert(buffer.readu32(b, 0) == 4294967295)
end
intuint()
local function intuinttricky()
local b = buffer.create(32)
buffer.writeu8(b, 0, 0xffffffff)
assert(buffer.readi8(b, 0) == -1)
assert(buffer.readu8(b, 0) == 255)
assert(buffer.readi16(b, 0) == 255)
assert(buffer.readu16(b, 0) == 255)
assert(buffer.readi32(b, 0) == 255)
assert(buffer.readu32(b, 0) == 255)
buffer.writeu16(b, 0, 0xffffffff)
assert(buffer.readi8(b, 0) == -1)
assert(buffer.readu8(b, 0) == 255)
assert(buffer.readi16(b, 0) == -1)
assert(buffer.readu16(b, 0) == 65535)
assert(buffer.readi32(b, 0) == 65535)
assert(buffer.readu32(b, 0) == 65535)
buffer.writei32(b, 8, 0xffffffff)
buffer.writeu32(b, 12, 0xffffffff)
assert(buffer.readstring(b, 8, 4) == buffer.readstring(b, 12, 4))
buffer.writei32(b, 8, -2147483648)
buffer.writeu32(b, 12, 0x80000000)
assert(buffer.readstring(b, 8, 4) == buffer.readstring(b, 12, 4))
end
intuinttricky()
local function fromtostring()
local b = buffer.fromstring("1234567890")
assert(buffer.tostring(b) == "1234567890")
buffer.writestring(b, 4, "xyz")
assert(buffer.tostring(b) == "1234xyz890")
local b2 = buffer.fromstring("abcd\0ef")
assert(buffer.tostring(b2) == "abcd\0ef")
end
fromtostring()
local function fill()
local b = buffer.create(10)
buffer.fill(b, 0, 0x61)
assert(buffer.tostring(b) == "aaaaaaaaaa")
buffer.fill(b, 0, 0x62, 5)
assert(buffer.tostring(b) == "bbbbbaaaaa")
buffer.fill(b, 4, 0x63)
assert(buffer.tostring(b) == "bbbbcccccc")
buffer.fill(b, 6, 0x64, 3)
assert(buffer.tostring(b) == "bbbbccdddc")
buffer.fill(b, 2, 0xffffff65, 8)
assert(buffer.tostring(b) == "bbeeeeeeee")
-- out of bounds
assert(ecall(function() buffer.fill(b, -10, 1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.fill(b, 11, 1) end) == "buffer access out of bounds")
assert(ecall(function() buffer.fill(b, 0, 1, 11) end) == "buffer access out of bounds")
assert(ecall(function() buffer.fill(b, 5, 1, 6) end) == "buffer access out of bounds")
assert(ecall(function() buffer.fill(b, 5, 1, -1) end) == "buffer access out of bounds")
end
fill()
local function misc(t16)
local b = buffer.create(1000)
assert(select('#', buffer.writei32(b, 10, 40)) == 0)
assert(select('#', buffer.writef32(b, 20, 40.0)) == 0)
-- some extra operation to place '#t16' into a linear block
t16[1] = 10
t16[15] = 20
buffer.writei32(b, #t16, 10)
assert(buffer.readi32(b, 16) == 10)
buffer.writeu8(b, 100, 0xff)
buffer.writeu8(b, 110, 0x80)
assert(buffer.readu32(b, 100) == 255)
assert(buffer.readu32(b, 110) == 128)
buffer.writeu16(b, 200, 0xffff)
buffer.writeu16(b, 210, 0x8000)
assert(buffer.readu32(b, 200) == 65535)
assert(buffer.readu32(b, 210) == 32768)
end
misc(table.create(16, 0))
local function testslowcalls()
getfenv()
simple_byte_reads()
offset_byte_reads(5)
offset_byte_reads(30)
simple_float_reinterpret()
simple_double_reinterpret()
simple_string_ops()
createchecks()
boundchecks()
boundchecksnonconst(1024, -1, -100000, 0x7fffffff)
boundcheckssmall()
boundcheckssmallnonconst(0, 1, -1, -2, -4, -7, -8)
boundchecksempty()
intuint()
intuinttricky()
fromtostring()
fill()
misc(table.create(16, 0))
end
testslowcalls()
return('OK')
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