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win: handle empty string in uv_get_process_title

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Distinguish between errors and "the console title is the empty string"
when calling GetConsoleTitle. Both are signified by a return value of
zero.

No test because I couldn't think of a succinct way to programmatically
create a new console window with an empty title.

Fixes: https://github.com/nodejs/node/issues/58695
This commit is contained in:
Ben Noordhuis 2025-06-14 22:53:59 +02:00
parent e13e80b20c
commit 4f941763fc
1 changed files with 7 additions and 2 deletions
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9
src/win/util.c
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@ -378,10 +378,15 @@ done:
static int uv__get_process_title(void) {
WCHAR title_w[MAX_TITLE_LENGTH];
DWORD wlen;
DWORD err;
SetLastError(ERROR_SUCCESS);
wlen = GetConsoleTitleW(title_w, sizeof(title_w) / sizeof(WCHAR));
if (wlen == 0)
return uv_translate_sys_error(GetLastError());
if (wlen == 0) {
err = GetLastError();
if (err != 0)
return uv_translate_sys_error(err);
}
return uv__convert_utf16_to_utf8(title_w, wlen, &process_title);
}