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// Test case for Issue 355:
// https://github.com/typetools/checker-framework/issues/355
import java.util.List;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;
class Issue355 {
static <T extends @Nullable Object> @NonNull T checkNotNull(@Nullable T sample) {
throw new RuntimeException();
}
void m(List<String> xs) {
for (String x : checkNotNull(xs)) {}
}
}
class Issue355b {
static <T> T checkNotNull(T sample) {
throw new RuntimeException();
}
void m(List<String> xs) {
for (Object x : checkNotNull(xs)) {}
}
}
class Issue355c {
static <T> T checkNotNull(@NonNull T sample) {
throw new RuntimeException();
}
void m(List<String> xs) {
for (Object x : checkNotNull(xs)) {}
}
}
class Issue355d {
static <T> @Nullable T checkNotNull(@NonNull T sample) {
throw new RuntimeException();
}
void m(List<String> xs) {
// :: error: (iterating.over.nullable)
for (Object x : checkNotNull(xs)) {}
}
}
class Issue355e {
static <T> @NonNull T checkNotNull(@NonNull T sample) {
throw new RuntimeException();
}
void m(@Nullable List<String> xs) {
// :: error: (argument.type.incompatible)
for (Object x : checkNotNull(xs)) {}
}
}
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