From baa53b5cf3c44a7c6d8879e279ce01a11098b474 Mon Sep 17 00:00:00 2001
From: Svyatoslav Kuzmich <svyatoslav.kuzmich@jetbrains.com>
Date: Thu, 21 Oct 2021 12:48:43 +0300
Subject: [PATCH] [Wasm][Stdlib] Use array copy in String.toCharArray()

And don't use copy during internal non-mutating algorithms
---
 .../stdlib/wasm/internal/kotlin/wasm/internal/ImportExport.kt   | 2 +-
 libraries/stdlib/wasm/src/kotlin/Text.kt                        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libraries/stdlib/wasm/internal/kotlin/wasm/internal/ImportExport.kt b/libraries/stdlib/wasm/internal/kotlin/wasm/internal/ImportExport.kt
index 944865aa11c..11f6c4471ef 100644
--- a/libraries/stdlib/wasm/internal/kotlin/wasm/internal/ImportExport.kt
+++ b/libraries/stdlib/wasm/internal/kotlin/wasm/internal/ImportExport.kt
@@ -14,7 +14,7 @@ internal fun exportString(src: String?): Int {
 
     val retAddr = unsafeGetScratchRawMemory(INT_SIZE_BYTES + src.length * CHAR_SIZE_BYTES)
     wasm_i32_store(retAddr, src.length)
-    unsafeCharArrayToRawMemory(src.toCharArray(), retAddr + INT_SIZE_BYTES)
+    unsafeCharArrayToRawMemory(src.chars, retAddr + INT_SIZE_BYTES)
     return retAddr
 }
 
diff --git a/libraries/stdlib/wasm/src/kotlin/Text.kt b/libraries/stdlib/wasm/src/kotlin/Text.kt
index d96889eccef..9a4b27511a4 100644
--- a/libraries/stdlib/wasm/src/kotlin/Text.kt
+++ b/libraries/stdlib/wasm/src/kotlin/Text.kt
@@ -288,7 +288,7 @@ public actual fun CharArray.concatToString(startIndex: Int, endIndex: Int): Stri
  */
 @SinceKotlin("1.3")
 @ExperimentalStdlibApi
-public actual fun String.toCharArray(): CharArray = this.chars
+public actual fun String.toCharArray(): CharArray = this.chars.copyOf()
 
 /**
  * Returns a [CharArray] containing characters of this string or its substring.