[musl] Question about the printf()

[musl] Question about the printf()

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Hi
I have one question in printf.
When I use printf to print data, I find that printf hides the data after '\0' when printing '\0'.


int main()
{
    char c = '\0';
    printf("c: %c , 111111 \n", c);
    return 0;
}
As shown in the above code, musl library printing will only display "c:", and the following "11111" data will not be displayed. 
Under mac and linux systems, the code will print "c:, 111111" completely.
Best 
ye

 

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Re: [musl] Question about the printf()

[Rich Felker]

On Thu, Oct 10, 2024 at 09:37:10AM +0800,  . wrote:
> Hi
> I have one question in printf.
> When I use printf to print data, I find that printf hides the data after '\0' when printing '\0'.
> 
> 
> int main()
> {
>     char c = '\0';
>     printf("c: %c , 111111 \n", c);
>     return 0;
> }
> As shown in the above code, musl library printing will only display "c:", and the following "11111" data will not be displayed. 
> Under mac and linux systems, the code will print "c:, 111111" completely.
> Best 
> ye

I get the expected output, including the 111111 and \n. Maybe you're
using a compiler that's making an invalid optimization (maybe
converting this printf to a puts even though that's not equivalent) or
something is hiding the output after the nul character from you..?