Allow non-ASCII environment variables. (#24025)

Fixes: #24024

Author: sbc100

src/lib/libwasi.js

@@ -84,27 +84,30 @@ var WasiLibrary = {
     return getEnvStrings.strings;
   },
 
-  environ_sizes_get__deps: ['$getEnvStrings'],
+  environ_sizes_get__deps: ['$getEnvStrings', '$lengthBytesUTF8'],
   environ_sizes_get__nothrow: true,
   environ_sizes_get: (penviron_count, penviron_buf_size) => {
     var strings = getEnvStrings();
     {{{ makeSetValue('penviron_count', 0, 'strings.length', SIZE_TYPE) }}};
     var bufSize = 0;
-    strings.forEach((string) => bufSize += string.length + 1);
+    for (var string of strings) {
+      bufSize += lengthBytesUTF8(string) + 1;
+    }
     {{{ makeSetValue('penviron_buf_size', 0, 'bufSize', SIZE_TYPE) }}};
     return 0;
   },
 
-  environ_get__deps: ['$getEnvStrings', '$stringToAscii'],
+  environ_get__deps: ['$getEnvStrings', '$stringToUTF8'],
   environ_get__nothrow: true,
   environ_get: (__environ, environ_buf) => {
     var bufSize = 0;
-    getEnvStrings().forEach((string, i) => {
+    var envp = 0;
+    for (var string of getEnvStrings()) {
       var ptr = environ_buf + bufSize;
-      {{{ makeSetValue('__environ', `i*${POINTER_SIZE}`, 'ptr', POINTER_TYPE) }}};
-      stringToAscii(string, ptr);
-      bufSize += string.length + 1;
-    });
+      {{{ makeSetValue('__environ', 'envp', 'ptr', POINTER_TYPE) }}};
+      bufSize += stringToUTF8(string, ptr, Infinity) + 1;
+      envp += {{{ POINTER_SIZE }}};
+    }
     return 0;
   },
 

test/other/codesize/test_codesize_cxx_ctors1.gzsize

@@ -1 +1 @@
-8233
+8243

test/other/codesize/test_codesize_cxx_ctors1.jssize

@@ -1 +1 @@
-19989
+19969

test/other/codesize/test_codesize_cxx_ctors2.gzsize

@@ -1 +1 @@
-8220
+8230

test/other/codesize/test_codesize_cxx_ctors2.jssize

@@ -1 +1 @@
-19967
+19947

test/other/codesize/test_codesize_cxx_except.gzsize

@@ -1 +1 @@
-9231
+9233

test/other/codesize/test_codesize_cxx_except.jssize

@@ -1 +1 @@
-23726
+23707

test/other/codesize/test_codesize_cxx_except_wasm.gzsize

@@ -1 +1 @@
-8176
+8187

test/other/codesize/test_codesize_cxx_except_wasm.jssize

@@ -1 +1 @@
-19881
+19861

test/other/codesize/test_codesize_cxx_except_wasm_legacy.gzsize

@@ -1 +1 @@
-8176
+8187