shift count warning

Thread View: gnu.gcc.bug

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1 total messages Started by Michael Shapiro Mon, 14 Sep 1992 16:52

#1138

Author: Michael Shapiro
Date: Mon, 14 Sep 1992 16:52

22 lines
929 bytes

The following short program gives a warning message I think it shouldn't.
I wanted to pass this by you to see why it is giving me the warning. The
compiled code does what it is supposed to do:

    main()
    {
	unsigned char b;
	int x,y;

	x = 511;
	y = 1;

	b = (unsigned char )(x - (y<<8));
	printf ("%d\n", (int)b);
    }

# gcc main.c
main.c: In function `main':
main.c:9: warning: shift count exceeds width of value shifted

# a.out
255

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