--amend

Author: skoppe

src/core/atomic.d

@@ -564,8 +564,8 @@ TailShared!T atomicOp(string op, T, V1)(ref shared T val, V1 mod) pure nothrow @
 in (atomicValueIsProperlyAligned(val))
 {
   version (WebAssembly) {
-    mixin ("*(cast(T*)&val) "~op~" mod;");
-    return *(cast(T*)&val);
+      T get = *cast(T*)&val;
+      mixin ("return get " ~ op ~ " mod;");
   } else {
     version (LDC)
     {

src/core/internal/entrypoint.d

@@ -52,7 +52,7 @@ template _d_cmain()
             import core.sys.wasi.core;
             void __wasm_call_ctors();
             pragma(mangle, "_start")
-              export void _start() {
+              @weak export void _start() {
               __wasm_call_ctors();
               proc_exit(main(0, null));
             }

src/core/stdc/errno.d

@@ -156,12 +156,12 @@ else version (Haiku)
 }
  else version (WASI_libc) {
    extern(C) {
-     __gshared extern int errno;
+       extern int errno;
    }
    extern (C)
    {
-     int getErrno() { return errno; };      // for internal use
-     int setErrno(int e) { errno = e; return 0; };   // for internal use
+       extern int getErrno();// { return errno; };      // for internal use
+       extern int setErrno(int e);// { errno = e; return 0; };   // for internal use
    }
  }
 else