[avr-gcc-list] [Bug target/35634] New: [avr] result of char promotion comes out of CHAR_MIN/MAX

[Dmitry K.]

/* The next program is aborted with avr-gcc 4.1.2, 4.2.3, 4.3.0:
      result of char promotion comes out of CHAR_MIN/MAX.
   Options: -W -Wall -Os
   Know to work:
      3.3.6, 3.4.6 - good code
      4.0.4 - correct, but not the best
      4.1.2, 4.2.3, 4.3.0 - without optimization only
 */

#include <limits.h>

void abort (void);
void exit (int);

void foo (int i)
{
    static int n;
    if (i < CHAR_MIN || i > CHAR_MAX)
        abort ();
    if (++n > 1000)
        exit (0);
}

int main ()
{
    char c;
    for (c = 0; ; c++) foo (c);
}