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// Test case for Issue panacekcz#8:
// https://github.com/panacekcz/checker-framework/issues/8
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.checkerframework.checker.index.qual.NonNegative;
public class RegexMatcher {
static void m(String p, String s) {
Matcher matcher = Pattern.compile(p).matcher(s);
// The following line cannot be used as a test,
// because the relation of matcher to p is not tracked,
// so the upper bound is not known.
// s.substring(matcher.start(), matcher.end());
@NonNegative int i;
i = matcher.start();
i = matcher.end();
// :: error: (assignment.type.incompatible)
i = matcher.start(1);
// :: error: (assignment.type.incompatible)
i = matcher.end(1);
}
}
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