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31 lines
845 B
C
31 lines
845 B
C
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/* bug 1562: cc65 generates incorrect code for logical expression with -O */
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#include <stdio.h>
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#include <string.h>
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int failures = 0;
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char input[256];
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#define DEBUGTRUE(x) printf("%s=%d\n", #x, (x)); failures += (x) ? 0 : 1
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#define DEBUGFALSE(x) printf("%s=%d\n", #x, (x)); failures += (x) ? 1 : 0
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int main(void) {
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char* r;
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strcpy(input, "\"XYZ\"");
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r = input+4;
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DEBUGFALSE(*r != '"'); // = false
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DEBUGTRUE(*r == '"'); // = true
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DEBUGFALSE(*(r+1) == '"'); // = false
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// Next answer should be false because
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// (false || true && false) is false, but it is true with -O.
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DEBUGFALSE(*r != '"' || *r == '"' && *(r+1) == '"');
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// Adding parens fixes it even with -O.
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DEBUGFALSE(*r != '"' || (*r == '"' && *(r+1) == '"'));
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printf("failures: %d\n", failures);
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return failures;
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}
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