alexcrichton

failed test: tests/testsuite/proposals/function-references/br_on_null.wast

Caused by:
    unexpected token, expected one of: `func`, `extern`, `any`, `exn`, `eq`, `i31`, an index
         --> tests/testsuite/proposals/function-references/br_on_null.wast:20:66
          |
       20 |   (func (export "nullable-null") (result i32) (call $n (ref.null (type $t))))
          |                                                                  ^
failed test: tests/testsuite/proposals/function-references/br_table.wast

alexcrichton

fn main() {
    let n = 42;
    println!("fib({}) = {}", n, fib(n));
}

fn fib(n: u32) -> u32 {
    if n <= 2 {
        1
    } else {
        fib(n - 1) + fib(n - 2)

alexcrichton

; ModuleID = 'foo.3a1fbbbh-cgu.0'
source_filename = "foo.3a1fbbbh-cgu.0"
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"

; Function Attrs: nounwind
define void @bar() unnamed_addr #0 {
start:
  tail call void @inline_me()
  ret void

alexcrichton

fn hex_encode_fallback<'a>(src: &[u8], dst: &'a mut [u8]) -> Result<&'a str, usize> {
    fn hex(byte: u8) -> u8 {
        static TABLE: &[u8] = b"0123456789abcdef";
        TABLE[byte as usize]
    }

    for (byte, slots) in src.iter().zip(dst.chunks_mut(2)) {
        slots[0] = hex((*byte >> 4) & 0xf);
        slots[1] = hex(*byte & 0xf);
    }

alexcrichton

JITDUMP specification version 2
Last Revised: 09/15/2016
Author: Stephane Eranian <[email protected]>

--------------------------------------------------------
| Revision  |    Date    | Description                 |
--------------------------------------------------------
|   1       | 09/07/2016 | Initial revision            |
--------------------------------------------------------
|   2       | 09/15/2016 | Add JIT_CODE_UNWINDING_INFO |

alexcrichton

#![allow(warnings)]
#![crate_type = "rlib"]

use std::io::Read;

type Result<T> = std::result::Result<T, ()>;

pub struct TypeSectionReader<'a>(&'a ());
pub struct ImportSectionReader<'a>(&'a ());
pub struct ModuleSectionReader<'a>(&'a ());

alexcrichton

--- before	2020-06-25 13:55:56.943297377 -0700
+++ after	2020-06-25 13:56:35.715449471 -0700
@@ -1,8 +1,8 @@
 if value != null:
   value.ref_count += 1
 let current_elem = table[index]
+table[index] = value
 if current_elem != null:
   current_elem.ref_count -= 1
   if current_elem.ref_count == 0:

alexcrichton

--- before	2020-06-25 13:55:56.943297377 -0700
+++ after	2020-06-25 13:56:01.743316233 -0700
@@ -1,8 +1,8 @@
 if value != null:
   value.ref_count += 1
 let current_elem = table[index]
+table[index] = value
 if current_elem != null:
   current_elem.ref_count -= 1
   if current_elem.ref_count == 0:

alexcrichton

use std::cell::RefCell;
use std::rc::Rc;
use wasmtime::*;

struct A {
    table: Table,
    put_the_thing: Rc<RefCell<Option<Val>>>,
    contents: String,
}

alexcrichton

use wasmtime::*;

struct A {
    table: Table,
    a: i32,
}

impl Drop for A {
    fn drop(&mut self) {
        let me = self.table.get(0).unwrap();