-Wconversion changes from 4.1 to 4.3

[Jan Engelhardt]

Hi,


in gcc 4.1, the following sample throws a warning:

/* gcc-4.1 -c test.c -Wall -Wconversion */
#include <stdbool.h>

static int a(bool b)
{
        return b ? 1 : 0;
}

int main(void)
{
        return a(true);
}

test.c:10: warning: passing argument 1 of ‘a’ with different width due 
to prototype

In gcc-4.3 however, that warning is gone. Where could I read more about 
this change?