Migrate Java code to separate QL repo.

2026-05-05 13:45:19 +02:00 · 2018-08-30 10:48:05 +01:00
parent d957c151a6
commit 846c9d5860
2319 changed files with 134386 additions and 0 deletions
--- a/java/ql/test/query-tests/UselessComparisonTest/A.java
+++ b/java/ql/test/query-tests/UselessComparisonTest/A.java
@@ -0,0 +1,130 @@
+import java.util.*;
+
+public class A {
+  int getInt() {
+    return new Object().hashCode();
+  }
+
+  void unreachable() { }
+
+  void test(int x, int y) {
+    if (x < 3) {
+      x++;
+      if (x - 1 == 2) return;
+      x--;
+      if (x >= 2) unreachable(); // useless test
+    }
+
+    if (y > 0) {
+      int z = (x >= 0) ? x : y;
+      if (z < 0) unreachable(); // useless test
+    }
+
+    int k;
+    while ((k = getInt()) >= 0) {
+      if (k < 0) unreachable(); // useless test
+    }
+
+    if (x > 0) {
+      int z = x & y;
+      if (!(z <= x)) unreachable(); // useless test
+    }
+
+    if (x % 2 == 0) {
+      for (int i = 0; i < x; i+=2) {
+        if (i + 1 >= x) unreachable(); // useless test
+      }
+    }
+
+    int r = new Random().nextInt(x);
+    if (r >= x) unreachable(); // useless test
+
+    if (x > Math.max(x, y)) unreachable(); // useless test
+    if (x < Math.min(x, y)) unreachable(); // useless test
+
+    int w;
+    if (x > 7) {
+      w = x + 10;
+    } else if (y > 20) {
+      w = y - 10;
+    } else {
+      w = 14;
+    }
+    w--;
+    w -= 2;
+    if (w <= 5) unreachable(); // useless test
+
+    while ((w--) > 0) {
+      if (w < 0) unreachable(); // useless test
+    }
+    if (w != -1) unreachable(); // useless test
+
+    if (x > 20) {
+      int i;
+      for (i = x; i > 0; i--) { }
+      if (i != 0) unreachable(); // useless test
+    }
+
+    if (getInt() > 0) {
+      int z = y;
+      if (getInt() > 5) {
+        z++;
+        if (z >= 3) return;
+      } else {
+        if (z >= 4) return;
+      }
+      if (z >= 4) unreachable(); // useless test
+    }
+
+    int length = getInt();
+    while (length > 0) {
+      int cnt = getInt();
+      length -= cnt;
+    }
+    for (int i = 0; i < length; ++i) { } // useless test
+
+    int b = getInt();
+    if (b > 4) b = 8;
+    if (b > 8) unreachable(); // useless test
+
+    int sz = getInt();
+    if (0 < x && x < sz) {
+      while (sz < x) { // useless test - false negative
+        sz <<= 1;
+      }
+    }
+  }
+
+  void overflowTests(int x, int y) {
+    if (x > 0) {
+      if (y + x <= y) overflow();
+      int d = x;
+      if ((d += y) <= y) overflow();
+    }
+
+    if (x >= 0 && y >= 0) {
+      if (x + y < 0) overflow();
+    }
+
+    int ofs = 1;
+    while (ofs < x) {
+      ofs = (ofs << 1) + 1;
+      if (ofs <= 0) { ofs = x; overflow(); }
+    }
+
+    int sz = getInt();
+    if (0 < x && 0 < sz) {
+      while (sz < x) {
+        sz <<= 1;
+        if (sz <= 0) overflow();
+      }
+    }
+  }
+
+  void overflow() { }
+
+  void unreachableCode() {
+    if (true) return;
+    for (int i = 0; i < 10; i++) { }
+  }
+}