alexcrichton

#include <stdio.h>
#include <thread>
#include <sys/mman.h>
#include <assert.h>

struct Foo {
  int a;
  void *ptr;
  Foo() : a(4) {
    ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);

alexcrichton

==2444257== Helgrind, a thread error detector
==2444257== Copyright (C) 2007-2017, and GNU GPL'd, by OpenWorks LLP et al.
==2444257== Using Valgrind-3.23.0.GIT and LibVEX; rerun with -h for copyright info
==2444257== Command: target/x86_64-unknown-linux-gnu/release/wat
==2444257== 
0
==2444257== ---Thread-Announcement------------------------------------------
==2444257== 
==2444257== Thread #1 is the program's root thread
==2444257== 

alexcrichton

    Finished `release` profile [optimized + debuginfo] target(s) in 0.10s
     Running `target/x86_64-unknown-linux-gnu/release/wat`
0
==================
WARNING: ThreadSanitizer: data race (pid=2339260)
  Write of size 8 at 0x7faaa6b96000 by thread T3:
    #0 __tsan_memcpy /rustc/llvm/src/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_memintrinsics.cpp:27:3 (wat+0xe69be) (BuildId: 2ed7393f2cc8e94b8a2c0cace5ca376100e9035a)
    #1 core::intrinsics::copy_nonoverlapping::h557b8d907fa657c7 /home/alex/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/intrinsics/mod.rs:4390:14 (wat+0x3979bd) (BuildId: 2ed7393f2cc8e94b8a2c0cace5ca376100e9035a)
    #2 core::slice::_$LT$impl$u20$$u5b$T$u5d$$GT$::copy_from_slice::h12b494d3c29e653e /home/alex/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/slice/mod.rs:3735:13 (wat+0x3979bd)
    #3 _$LT$$LT$wasmtime..compile..runtime..MmapVecWrapper$u20$as$u20$wasmtime_environ..compile..module_art

alexcrichton

    Finished `release` profile [optimized] target(s) in 0.10s
     Running `target/x86_64-unknown-linux-gnu/release/wat`
0
==================
WARNING: ThreadSanitizer: data race (pid=2285684)
  Write of size 8 at 0x724000008028 by thread T1:
    #0 memmove <null> (wat+0xe893e) (BuildId: a3a6796c17d7de568cd8820845c07bac41837262)
    #1 <null> <null> (libgcc_s.so.1+0x243c3) (BuildId: 3072445288dd2aba348bf583c65f70509aab8141)
    #2 wasmtime::runtime::code_memory::CodeMemory::publish::hb3246a7a669651d2 <null> (wat+0x31a75b) (BuildId: a3a6796c17d7de568cd8820845c07bac41837262)
    #3 wasmtime::compile::runtime::publish_mmap::he7291abf92f4259c <null> (wat+0x3c610e) (BuildId: a3a6796c17d7de568cd8820845c07bac41837262)

alexcrichton

diff --git a/src/vms/wasmtime.rs b/src/vms/wasmtime.rs
index 115f93d..befdc3d 100644
--- a/src/vms/wasmtime.rs
+++ b/src/vms/wasmtime.rs
@@ -3,7 +3,13 @@ use crate::utils::{CompileTestFilter, ExecuteTestFilter, TestFilter};
 use wasmi_new::ModuleImportsIter;
 
 pub struct Wasmtime {
-    pub strategy: wasmtime::Strategy,
+    pub strategy: Strategy,

alexcrichton

// Installation:
//  
//  1. Place this file in a folder "$somewhere/raidboss/top.js".
//      a. example: C:/Users/alex/Downloads/tmp/raidboss/top.js
//  2. ACT > Plugins > OverlayPlugin.dll > Cactbot Config
//  3. Set "Cactbot user directory" to "$somewhere" from above.
//      a. example: C:/Users/alex/Downloads/tmp
//  4. Reload the overlay
//  5. In "Cactbot Config" under "Raidboss" at the bottom you should see a path to "top.js"
//  6. Under "top.js" you should see "The Omega Protocol (Ultimate)"

alexcrichton

128.cwasm:     file format elf64-x86-64


Disassembly of section .text:

0000000000000000 <wasm[0]::function[0]>:
       0:	55                   	push   %rbp
       1:	48 89 e5             	mov    %rsp,%rbp
       4:	4c 8b 4f 58          	mov    0x58(%rdi),%r9

alexcrichton

--- good	2021-05-20 08:57:47.000000000 -0700
+++ bad	2021-05-20 08:56:49.000000000 -0700
@@ -227,11 +227,31 @@
 INFO rustc_metadata::creader resolving crate `unwind`
 INFO rustc_metadata::creader resolving crate `proc_macros`
 INFO rustc_metadata::creader falling back to a load
-INFO rustc_metadata::locator dylib reading metadata from: /Users/acrichton/code/wat/target/debug/deps/libproc_macros-5d137cd480dff532.dylib
-INFO rustc_metadata::creader register crate `proc_macros` (cnum = 18. private_dep = false)
-INFO rustc_metadata::creader resolving crate `proc_macros`
-INFO rustc_metadata::creader resolving crate `proc_macros`

alexcrichton

;; documentation comment
type $my_record = record {
  ;; field documentation
  field1: u32,
  field2: $other_record,
  field3: list[string],
  field4: in-buffer[u8],
}

;; comment on this type

alexcrichton

(module
  (import "" "" (func (param i64 i64 i64 i64 i64 i64 i64 i64 i64)))
  (func (export "a")
      i64.const 0
      i64.const 1
      i64.const 2
      i64.const 3
      i64.const 4
      i64.const 5
      i64.const 6