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29 lines
742 B
C
29 lines
742 B
C
/* Bug 1941 - Bitwise shift char types by 0 count results in out-of-range access */
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#include <stdio.h>
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#include <stdint.h>
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uint8_t foo = 42U; /* "Low byte" */
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uint8_t goo = 1U; /* "High byte" - you need it to reproduce the issue */
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int16_t bar = 256; /* ...or just do it with this */
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_Static_assert (sizeof (foo >> 0) == sizeof (int), "Shift result should be int-promoted");
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_Static_assert (sizeof ((int8_t)bar << 0) == sizeof (int), "Shift result should be int-promoted");
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unsigned failures;
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int main(void)
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{
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if (foo >> 0 != foo) {
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++failures;
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printf("foo failed\n");
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}
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if ((int8_t)bar << 0 != (int8_t)bar) {
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++failures;
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printf("bar failed\n");
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}
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return failures;
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}
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