wcslen on MinGW-w64

[dimmed]

I'm the groggily user on Github. I tried to use a library named libutf in the past:

https://github.com/holepunchto/libutf/issues/1

https://github.com/holepunchto/libutf/issues/2

The developer was not easy to work with. In the end the thread closed without anything settled.

I still think I was right about wcslen on MinGW-w64.

[Vortex]

Hi dimmed,

Could you be more specific as your question is not directly related to Pelles C ?

[TimoVJL]

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#include <stdio.h>
#include <wchar.h>

int main(void)
{
    const char* str = "\x41\x00\xa9\x03\x03\x26\x2d\x4e\x3d\xd8\x02\xde";
    printf("wcslen(str) = %zu\n", wcslen((wchar_t*)str));
    return 0;
}
x86

Code Select Expand

wcslen(str) = 15x64

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wcslen(str) = 9
This version using -Ze gives 6 in both cases

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#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdio.h>
#include <wchar.h>

#pragma comment(lib, "user32.lib")

int main(void)
{
    const char* str = "\x41\x00\xa9\x03\x03\x26\x2d\x4e\x3d\xd8\x02\xde";
    printf("wcslen(str) = %zu\n", wcslen((wchar_t*)str));
MessageBoxW(0, (wchar_t*)str, L"test", MB_OK);
    return 0;
}


[Pelle]

When using:

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wcslen((wchar_t*)str))
at the very least, make sure str is a properly terminated wide string (ignoring all other problems with this approach for now).

Append one (or two) '\0' to str, like so:

Code Select Expand

const char* str = "\x41\x00\xa9\x03\x03\x26\x2d\x4e\x3d\xd8\x02\xde\0";


[Vortex]

Hi dimmed,

Any chance to learn why specifically you selected this string?