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buffer: fix transcode for single-byte enc to ucs2 #9838

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buffer: fix transcode for single-byte enc to ucs2 #9838

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2 changes: 1 addition & 1 deletion src/node_i18n.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -179,7 +179,7 @@ MaybeLocal<Object> TranscodeToUcs2(Isolate* isolate,
MaybeLocal<Object> ret;
MaybeStackBuffer<UChar> destbuf(source_length);
Converter from(fromEncoding);
const size_t length_in_chars = source_length * sizeof(*destbuf);
const size_t length_in_chars = source_length * sizeof(UChar);
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destbuf[0]?

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The other instances of sizeof in this file use **destbuf or UChar. I’m fine with using destbuf[0] everywhere but right now I wouldn’t want to add more confusion here.

ucnv_toUChars(from.conv, *destbuf, length_in_chars,
source, source_length, status);
if (U_SUCCESS(*status))
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10 changes: 10 additions & 0 deletions test/parallel/test-icu-transcode.js
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Expand Up @@ -46,3 +46,13 @@ assert.throws(
() => buffer.transcode(Buffer.from('a'), 'uf8', 'b'),
/Unable to transcode Buffer \[U_ILLEGAL_ARGUMENT_ERROR\]/
);

assert.deepStrictEqual(
buffer.transcode(Buffer.from('hi', 'ascii'), 'ascii', 'utf16le'),
Buffer.from('hi', 'utf16le'));
assert.deepStrictEqual(
buffer.transcode(Buffer.from('hi', 'latin1'), 'latin1', 'utf16le'),
Buffer.from('hi', 'utf16le'));
assert.deepStrictEqual(
buffer.transcode(Buffer.from('hä', 'latin1'), 'latin1', 'utf16le'),
Buffer.from('hä', 'utf16le'));