commit 46f9aea80197bfdf4c024c3f5a71be51a2facf59
author Brad Fitzpatrick <bradfitz@golang.org> Wed Jan 15 20:26:56 2020 +0000
committer Brad Fitzpatrick <bradfitz@golang.org> Tue Feb 25 21:08:47 2020 +0000
tree a7f3ed4846f981b33ac2316e4d522ee1ced5a4c7
parent 583419e5d2a893e369095355035f4ebb18bb85f8

misc/wasm: avoid implicit boolean to number conversion

Fixes #36561

Change-Id: I20cbf95ef4fd7c5c255a93ed3ec3e027a0ce2bc2
Reviewed-on: https://go-review.googlesource.com/c/go/+/214944
Reviewed-by: Richard Musiol <neelance@gmail.com>

misc/wasm/wasm_exec.js

diff --git a/misc/wasm/wasm_exec.js b/misc/wasm/wasm_exec.js
index bb66cf2..5ac4032 100644
--- a/misc/wasm/wasm_exec.js
+++ b/misc/wasm/wasm_exec.js
@@ -440,7 +440,7 @@
 
 					// func valueInstanceOf(v ref, t ref) bool
 					"syscall/js.valueInstanceOf": (sp) => {
-						this.mem.setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16));
+						this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0);
 					},
 
 					// func copyBytesToGo(dst []byte, src ref) (int, bool)