Fix possible out of bounds read in string UTF8 conversion

This commit is contained in:
dcodeIO 2018-05-23 15:37:09 +02:00
parent 829af2285c
commit 51ede113dd
7 changed files with 687 additions and 658 deletions

2
dist/asc.js vendored

File diff suppressed because one or more lines are too long

2
dist/asc.js.map vendored

File diff suppressed because one or more lines are too long

View File

@ -414,57 +414,62 @@ export class String {
}
get lengthUTF8(): i32 {
var blen = 1; // null terminated
for (let i: usize = 0, k = <usize>this.length; i < k;) {
let c = <u32>load<u16>(changetype<usize>(this) + (i << 1), HEADER_SIZE);
var len = 1; // null terminated
var pos: usize = 0;
var end = <usize>this.length;
while (pos < end) {
let c = <u32>load<u16>(changetype<usize>(this) + (pos << 1), HEADER_SIZE);
if (c < 128) {
blen += 1; ++i;
len += 1; ++pos;
} else if (c < 2048) {
blen += 2; ++i;
} else if (
(c & 0xFC00) === 0xD800 &&
(<u32>load<u16>(changetype<usize>(this) + ((i + 1) << 1), HEADER_SIZE) & 0xFC00) === 0xDC00
) {
blen += 4; i += 2;
len += 2; ++pos;
} else {
blen += 3; ++i;
if (
(c & 0xFC00) == 0xD800 && pos + 1 < end &&
(<u32>load<u16>(changetype<usize>(this) + ((pos + 1) << 1), HEADER_SIZE) & 0xFC00) == 0xDC00
) {
len += 4; pos += 2;
} else {
len += 3; ++pos;
}
}
}
return blen;
return len;
}
toUTF8(): usize {
var len = this.lengthUTF8;
var buf = allocate_memory(len);
var buf = allocate_memory(<usize>this.lengthUTF8);
var pos: usize = 0;
var end = <usize>this.length;
var off: usize = 0;
for (let i: usize = 0, k = <usize>this.length; i < k;) {
let c1 = <u32>load<u16>(changetype<usize>(this) + (i << 1), HEADER_SIZE);
while (pos < end) {
let c1 = <u32>load<u16>(changetype<usize>(this) + (pos << 1), HEADER_SIZE);
if (c1 < 128) {
store<u8>(buf + off, c1);
++off; ++i;
++off; ++pos;
} else if (c1 < 2048) {
let pos = buf + off;
store<u8>(pos, c1 >> 6 | 192);
store<u8>(pos, c1 & 63 | 128, 1);
off += 2; ++i;
let ptr = buf + off;
store<u8>(ptr, c1 >> 6 | 192);
store<u8>(ptr, c1 & 63 | 128, 1);
off += 2; ++pos;
} else {
let pos = buf + off;
if ((c1 & 0xFC00) == 0xD800) {
let c2 = <u32>load<u16>(changetype<usize>(this) + ((i + 1) << 1), HEADER_SIZE);
let ptr = buf + off;
if ((c1 & 0xFC00) == 0xD800 && pos + 1 < end) {
let c2 = <u32>load<u16>(changetype<usize>(this) + ((pos + 1) << 1), HEADER_SIZE);
if ((c2 & 0xFC00) == 0xDC00) {
c1 = 0x10000 + ((c1 & 0x03FF) << 10) + (c2 & 0x03FF);
store<u8>(pos, c1 >> 18 | 240);
store<u8>(pos, c1 >> 12 & 63 | 128, 1);
store<u8>(pos, c1 >> 6 & 63 | 128, 2);
store<u8>(pos, c1 & 63 | 128, 3);
off += 4; i += 2;
store<u8>(ptr, c1 >> 18 | 240);
store<u8>(ptr, c1 >> 12 & 63 | 128, 1);
store<u8>(ptr, c1 >> 6 & 63 | 128, 2);
store<u8>(ptr, c1 & 63 | 128, 3);
off += 4; pos += 2;
continue;
}
}
store<u8>(pos, c1 >> 12 | 224);
store<u8>(pos, c1 >> 6 & 63 | 128, 1);
store<u8>(pos, c1 & 63 | 128, 2);
off += 3; ++i;
store<u8>(ptr, c1 >> 12 | 224);
store<u8>(ptr, c1 >> 6 & 63 | 128, 1);
store<u8>(ptr, c1 & 63 | 128, 2);
off += 3; ++pos;
}
}
store<u8>(buf + off, 0);

View File

@ -23,57 +23,39 @@
(set_local $1
(i32.const 1)
)
(block $break|0
(set_local $4
(i32.load
(get_local $0)
)
(set_local $4
(i32.load
(get_local $0)
)
(loop $loop|0
(br_if $break|0
(i32.ge_u
(get_local $2)
(get_local $4)
)
)
(loop $continue|0
(if
(i32.lt_u
(get_local $2)
(get_local $4)
)
(set_local $2
(if (result i32)
(i32.lt_u
(tee_local $3
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(get_local $2)
(i32.const 1)
(block
(set_local $2
(if (result i32)
(i32.lt_u
(tee_local $3
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(get_local $2)
(i32.const 1)
)
)
)
)
)
(i32.const 128)
)
(block (result i32)
(set_local $1
(i32.add
(get_local $1)
(i32.const 1)
)
)
(i32.add
(get_local $2)
(i32.const 1)
)
)
(if (result i32)
(i32.lt_u
(get_local $3)
(i32.const 2048)
(i32.const 128)
)
(block (result i32)
(set_local $1
(i32.add
(get_local $1)
(i32.const 2)
(i32.const 1)
)
)
(i32.add
@ -82,53 +64,15 @@
)
)
(if (result i32)
(if (result i32)
(tee_local $3
(i32.eq
(i32.and
(get_local $3)
(i32.const 64512)
)
(i32.const 55296)
)
)
(i32.eq
(i32.and
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $2)
(i32.const 1)
)
(i32.const 1)
)
)
)
(i32.const 64512)
)
(i32.const 56320)
)
(i32.lt_u
(get_local $3)
(i32.const 2048)
)
(block (result i32)
(set_local $1
(i32.add
(get_local $1)
(i32.const 4)
)
)
(i32.add
(get_local $2)
(i32.const 2)
)
)
(block (result i32)
(set_local $1
(i32.add
(get_local $1)
(i32.const 3)
(i32.const 2)
)
)
(i32.add
@ -136,11 +80,79 @@
(i32.const 1)
)
)
(if (result i32)
(if (result i32)
(if (result i32)
(tee_local $3
(i32.eq
(i32.and
(get_local $3)
(i32.const 64512)
)
(i32.const 55296)
)
)
(tee_local $3
(i32.lt_u
(i32.add
(get_local $2)
(i32.const 1)
)
(get_local $4)
)
)
(get_local $3)
)
(i32.eq
(i32.and
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $2)
(i32.const 1)
)
(i32.const 1)
)
)
)
(i32.const 64512)
)
(i32.const 56320)
)
(get_local $3)
)
(block (result i32)
(set_local $1
(i32.add
(get_local $1)
(i32.const 4)
)
)
(i32.add
(get_local $2)
(i32.const 2)
)
)
(block (result i32)
(set_local $1
(i32.add
(get_local $1)
(i32.const 3)
)
)
(i32.add
(get_local $2)
(i32.const 1)
)
)
)
)
)
)
(br $continue|0)
)
(br $loop|0)
)
)
(get_local $1)
@ -249,268 +261,270 @@
)
)
)
(block $break|0
(set_local $6
(i32.load
(get_local $0)
)
(set_local $7
(i32.load
(get_local $0)
)
(loop $loop|0
(block $continue|0
(br_if $break|0
(i32.ge_u
(get_local $2)
(get_local $6)
)
)
(set_local $3
(if (result i32)
(i32.lt_u
(tee_local $1
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(get_local $2)
(i32.const 1)
)
)
(loop $continue|0
(if
(i32.lt_u
(get_local $3)
(get_local $7)
)
(block
(if
(i32.lt_u
(tee_local $1
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(get_local $3)
(i32.const 1)
)
)
)
(i32.const 128)
)
(block (result i32)
(i32.const 128)
)
(block
(i32.store8
(i32.add
(get_local $5)
(get_local $2)
)
(get_local $1)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
)
)
)
(if
(i32.lt_u
(get_local $1)
(i32.const 2048)
)
(block
(i32.store8
(i32.add
(get_local $5)
(get_local $3)
(tee_local $4
(i32.add
(get_local $5)
(get_local $2)
)
)
(i32.or
(i32.shr_u
(get_local $1)
(i32.const 6)
)
(i32.const 192)
)
)
(i32.store8 offset=1
(get_local $4)
(i32.or
(i32.and
(get_local $1)
(i32.const 63)
)
(i32.const 128)
)
(get_local $1)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
)
)
(i32.add
(get_local $3)
(i32.const 1)
)
)
(if (result i32)
(i32.lt_u
(get_local $1)
(i32.const 2048)
)
(block (result i32)
(i32.store8
(tee_local $4
(i32.add
(get_local $5)
(get_local $3)
)
)
(i32.or
(i32.shr_u
(get_local $1)
(i32.const 6)
)
(i32.const 192)
)
)
(i32.store8 offset=1
(get_local $4)
(i32.or
(i32.and
(get_local $1)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
)
)
(i32.add
(get_local $3)
(i32.const 2)
)
)
(block (result i32)
(set_local $4
(i32.add
(get_local $5)
(get_local $3)
)
(block
(set_local $4
(i32.add
(get_local $5)
(get_local $2)
)
)
(if
(if (result i32)
(tee_local $6
(i32.eq
(i32.and
(get_local $1)
(i32.const 64512)
)
(i32.const 55296)
)
)
(i32.lt_u
(i32.add
(get_local $3)
(i32.const 1)
)
(get_local $7)
)
(get_local $6)
)
(if
(i32.eq
(i32.and
(get_local $1)
(i32.const 64512)
)
(i32.const 55296)
)
(if
(i32.eq
(i32.and
(tee_local $7
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $2)
(i32.const 1)
)
(tee_local $6
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $3)
(i32.const 1)
)
(i32.const 1)
)
)
)
(i32.const 64512)
)
(i32.const 56320)
(i32.const 64512)
)
(block
(i32.store8
(get_local $4)
(i32.or
(i32.shr_u
(tee_local $1
(i32.const 56320)
)
(block
(i32.store8
(get_local $4)
(i32.or
(i32.shr_u
(tee_local $1
(i32.add
(i32.add
(i32.add
(i32.shl
(i32.and
(get_local $1)
(i32.const 1023)
)
(i32.const 10)
(i32.shl
(i32.and
(get_local $1)
(i32.const 1023)
)
(i32.const 65536)
)
(i32.and
(get_local $7)
(i32.const 1023)
(i32.const 10)
)
(i32.const 65536)
)
(i32.and
(get_local $6)
(i32.const 1023)
)
)
(i32.const 18)
)
(i32.const 240)
(i32.const 18)
)
(i32.const 240)
)
(i32.store8 offset=1
(get_local $4)
(i32.or
(i32.and
(i32.shr_u
(get_local $1)
(i32.const 12)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=2
(get_local $4)
(i32.or
(i32.and
(i32.shr_u
(get_local $1)
(i32.const 6)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=3
(get_local $4)
(i32.or
(i32.and
(get_local $1)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $3
(i32.add
(get_local $3)
(i32.const 4)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 2)
)
)
(br $loop|0)
)
(i32.store8 offset=1
(get_local $4)
(i32.or
(i32.and
(i32.shr_u
(get_local $1)
(i32.const 12)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=2
(get_local $4)
(i32.or
(i32.and
(i32.shr_u
(get_local $1)
(i32.const 6)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=3
(get_local $4)
(i32.or
(i32.and
(get_local $1)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 4)
)
)
(set_local $3
(i32.add
(get_local $3)
(i32.const 2)
)
)
(br $continue|0)
)
)
(i32.store8
(get_local $4)
(i32.or
)
(i32.store8
(get_local $4)
(i32.or
(i32.shr_u
(get_local $1)
(i32.const 12)
)
(i32.const 224)
)
)
(i32.store8 offset=1
(get_local $4)
(i32.or
(i32.and
(i32.shr_u
(get_local $1)
(i32.const 12)
(i32.const 6)
)
(i32.const 224)
(i32.const 63)
)
(i32.const 128)
)
(i32.store8 offset=1
(get_local $4)
(i32.or
(i32.and
(i32.shr_u
(get_local $1)
(i32.const 6)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=2
(get_local $4)
(i32.or
(i32.and
(get_local $1)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
)
(i32.store8 offset=2
(get_local $4)
(i32.or
(i32.and
(get_local $1)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $2
(i32.add
(get_local $3)
(get_local $2)
(i32.const 3)
)
)
)
)
)
(set_local $3
(i32.add
(get_local $3)
(i32.const 1)
)
)
(br $continue|0)
)
(br $loop|0)
)
)
(i32.store8
(i32.add
(get_local $5)
(get_local $3)
(get_local $2)
)
(i32.const 0)
)

View File

@ -29,68 +29,44 @@
(set_local $1
(i32.const 1)
)
(block $break|0
(block
(set_local $2
(i32.const 0)
)
(set_local $3
(i32.load
(get_local $0)
)
)
(set_local $2
(i32.const 0)
)
(set_local $3
(i32.load
(get_local $0)
)
(loop $loop|0
(block $continue|0
(br_if $break|0
(i32.eqz
(i32.lt_u
(get_local $2)
(get_local $3)
)
)
)
(block $break|0
(loop $continue|0
(if
(i32.lt_u
(get_local $2)
(get_local $3)
)
(block
(set_local $4
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(get_local $2)
(i32.const 1)
)
)
)
)
(if
(i32.lt_u
(get_local $4)
(i32.const 128)
)
(block
(set_local $1
(block
(set_local $4
(i32.load16_u offset=4
(i32.add
(get_local $1)
(i32.const 1)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
(get_local $0)
(i32.shl
(get_local $2)
(i32.const 1)
)
)
)
)
(if
(i32.lt_u
(get_local $4)
(i32.const 2048)
(i32.const 128)
)
(block
(set_local $1
(i32.add
(get_local $1)
(i32.const 2)
(i32.const 1)
)
)
(set_local $2
@ -101,57 +77,17 @@
)
)
(if
(if (result i32)
(tee_local $5
(i32.eq
(i32.and
(get_local $4)
(i32.const 64512)
)
(i32.const 55296)
)
)
(i32.eq
(i32.and
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $2)
(i32.const 1)
)
(i32.const 1)
)
)
)
(i32.const 64512)
)
(i32.const 56320)
)
(get_local $5)
(i32.lt_u
(get_local $4)
(i32.const 2048)
)
(block
(set_local $1
(i32.add
(get_local $1)
(i32.const 4)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 2)
)
)
)
(block
(set_local $1
(i32.add
(get_local $1)
(i32.const 3)
)
)
(set_local $2
(i32.add
(get_local $2)
@ -159,13 +95,84 @@
)
)
)
(if
(if (result i32)
(tee_local $5
(if (result i32)
(tee_local $5
(i32.eq
(i32.and
(get_local $4)
(i32.const 64512)
)
(i32.const 55296)
)
)
(i32.lt_u
(i32.add
(get_local $2)
(i32.const 1)
)
(get_local $3)
)
(get_local $5)
)
)
(i32.eq
(i32.and
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $2)
(i32.const 1)
)
(i32.const 1)
)
)
)
(i32.const 64512)
)
(i32.const 56320)
)
(get_local $5)
)
(block
(set_local $1
(i32.add
(get_local $1)
(i32.const 4)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 2)
)
)
)
(block
(set_local $1
(i32.add
(get_local $1)
(i32.const 3)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
)
)
)
)
)
)
)
(br $continue|0)
)
)
(nop)
(br $loop|0)
)
)
(return
@ -290,116 +297,56 @@
(local $5 i32)
(local $6 i32)
(local $7 i32)
(local $8 i32)
(set_local $1
(call $~lib/string/String#get:lengthUTF8
(get_local $0)
(call $~lib/allocator/arena/allocate_memory
(call $~lib/string/String#get:lengthUTF8
(get_local $0)
)
)
)
(set_local $2
(call $~lib/allocator/arena/allocate_memory
(get_local $1)
)
(i32.const 0)
)
(set_local $3
(i32.load
(get_local $0)
)
)
(set_local $4
(i32.const 0)
)
(block $break|0
(block
(set_local $4
(i32.const 0)
)
(set_local $5
(i32.load
(get_local $0)
)
)
)
(loop $loop|0
(block $continue|0
(br_if $break|0
(i32.eqz
(i32.lt_u
(get_local $4)
(get_local $5)
)
)
(loop $continue|0
(if
(i32.lt_u
(get_local $2)
(get_local $3)
)
(block
(set_local $6
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(get_local $4)
(i32.const 1)
)
)
)
)
(if
(i32.lt_u
(get_local $6)
(i32.const 128)
)
(block
(i32.store8
(block
(set_local $5
(i32.load16_u offset=4
(i32.add
(get_local $2)
(get_local $3)
)
(get_local $6)
)
(set_local $3
(i32.add
(get_local $3)
(i32.const 1)
)
)
(set_local $4
(i32.add
(get_local $4)
(i32.const 1)
(get_local $0)
(i32.shl
(get_local $2)
(i32.const 1)
)
)
)
)
(if
(i32.lt_u
(get_local $6)
(i32.const 2048)
(get_local $5)
(i32.const 128)
)
(block
(set_local $7
(i32.add
(get_local $2)
(get_local $3)
)
)
(i32.store8
(get_local $7)
(i32.or
(i32.shr_u
(get_local $6)
(i32.const 6)
)
(i32.const 192)
)
)
(i32.store8 offset=1
(get_local $7)
(i32.or
(i32.and
(get_local $6)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $3
(i32.add
(get_local $3)
(i32.const 2)
(get_local $1)
(get_local $4)
)
(get_local $5)
)
(set_local $4
(i32.add
@ -407,190 +354,253 @@
(i32.const 1)
)
)
)
(block
(set_local $7
(set_local $2
(i32.add
(get_local $2)
(get_local $3)
(i32.const 1)
)
)
(if
(i32.eq
(i32.and
(get_local $6)
(i32.const 64512)
)
(i32.const 55296)
)
(block
(set_local $8
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $4)
(i32.const 1)
)
(i32.const 1)
)
)
)
)
(if
(i32.eq
(i32.and
(get_local $8)
(i32.const 64512)
)
(i32.const 56320)
)
(block
(set_local $6
(i32.add
(i32.add
(i32.const 65536)
(i32.shl
(i32.and
(get_local $6)
(i32.const 1023)
)
(i32.const 10)
)
)
(i32.and
(get_local $8)
(i32.const 1023)
)
)
)
(i32.store8
(get_local $7)
(i32.or
(i32.shr_u
(get_local $6)
(i32.const 18)
)
(i32.const 240)
)
)
(i32.store8 offset=1
(get_local $7)
(i32.or
(i32.and
(i32.shr_u
(get_local $6)
(i32.const 12)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=2
(get_local $7)
(i32.or
(i32.and
(i32.shr_u
(get_local $6)
(i32.const 6)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=3
(get_local $7)
(i32.or
(i32.and
(get_local $6)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $3
(i32.add
(get_local $3)
(i32.const 4)
)
)
(set_local $4
(i32.add
(get_local $4)
(i32.const 2)
)
)
(br $continue|0)
)
)
)
)
(if
(i32.lt_u
(get_local $5)
(i32.const 2048)
)
(i32.store8
(get_local $7)
(i32.or
(i32.shr_u
(get_local $6)
(i32.const 12)
(block
(set_local $6
(i32.add
(get_local $1)
(get_local $4)
)
(i32.const 224)
)
)
(i32.store8 offset=1
(get_local $7)
(i32.or
(i32.and
(i32.store8
(get_local $6)
(i32.or
(i32.shr_u
(get_local $6)
(get_local $5)
(i32.const 6)
)
(i32.const 63)
(i32.const 192)
)
(i32.const 128)
)
)
(i32.store8 offset=2
(get_local $7)
(i32.or
(i32.and
(get_local $6)
(i32.const 63)
(i32.store8 offset=1
(get_local $6)
(i32.or
(i32.and
(get_local $5)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $4
(i32.add
(get_local $4)
(i32.const 2)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
)
(i32.const 128)
)
)
(set_local $3
(i32.add
(get_local $3)
(i32.const 3)
(block
(set_local $6
(i32.add
(get_local $1)
(get_local $4)
)
)
)
(set_local $4
(i32.add
(get_local $4)
(i32.const 1)
(if
(if (result i32)
(tee_local $7
(i32.eq
(i32.and
(get_local $5)
(i32.const 64512)
)
(i32.const 55296)
)
)
(i32.lt_u
(i32.add
(get_local $2)
(i32.const 1)
)
(get_local $3)
)
(get_local $7)
)
(block
(set_local $7
(i32.load16_u offset=4
(i32.add
(get_local $0)
(i32.shl
(i32.add
(get_local $2)
(i32.const 1)
)
(i32.const 1)
)
)
)
)
(if
(i32.eq
(i32.and
(get_local $7)
(i32.const 64512)
)
(i32.const 56320)
)
(block
(set_local $5
(i32.add
(i32.add
(i32.const 65536)
(i32.shl
(i32.and
(get_local $5)
(i32.const 1023)
)
(i32.const 10)
)
)
(i32.and
(get_local $7)
(i32.const 1023)
)
)
)
(i32.store8
(get_local $6)
(i32.or
(i32.shr_u
(get_local $5)
(i32.const 18)
)
(i32.const 240)
)
)
(i32.store8 offset=1
(get_local $6)
(i32.or
(i32.and
(i32.shr_u
(get_local $5)
(i32.const 12)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=2
(get_local $6)
(i32.or
(i32.and
(i32.shr_u
(get_local $5)
(i32.const 6)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=3
(get_local $6)
(i32.or
(i32.and
(get_local $5)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $4
(i32.add
(get_local $4)
(i32.const 4)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 2)
)
)
(br $continue|0)
)
)
)
)
(i32.store8
(get_local $6)
(i32.or
(i32.shr_u
(get_local $5)
(i32.const 12)
)
(i32.const 224)
)
)
(i32.store8 offset=1
(get_local $6)
(i32.or
(i32.and
(i32.shr_u
(get_local $5)
(i32.const 6)
)
(i32.const 63)
)
(i32.const 128)
)
)
(i32.store8 offset=2
(get_local $6)
(i32.or
(i32.and
(get_local $5)
(i32.const 63)
)
(i32.const 128)
)
)
(set_local $4
(i32.add
(get_local $4)
(i32.const 3)
)
)
(set_local $2
(i32.add
(get_local $2)
(i32.const 1)
)
)
)
)
)
)
(br $continue|0)
)
)
(nop)
(br $loop|0)
)
)
(i32.store8
(i32.add
(get_local $2)
(get_local $3)
(get_local $1)
(get_local $4)
)
(i32.const 0)
)
(return
(get_local $2)
(get_local $1)
)
)
(func $~lib/allocator/arena/free_memory (; 4 ;) (type $iv) (param $0 i32)

View File

@ -980,7 +980,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 76)
(i32.const 524)
(i32.const 529)
(i32.const 10)
)
(unreachable)

View File

@ -1159,7 +1159,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 76)
(i32.const 524)
(i32.const 529)
(i32.const 10)
)
(unreachable)