Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 94 insertions, 0 deletions

diff --git a/clang/test/Analysis/coverage.c b/clang/test/Analysis/coverage.c
new file mode 100644
index 0000000..73d78da
--- /dev/null
+++ b/clang/test/Analysis/coverage.c
@@ -0,0 +1,94 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -analyzer-store=region -analyzer-max-loop 4 -verify %s
+#include "system-header-simulator.h"
+
+typedef __typeof(sizeof(int)) size_t;
+void *malloc(size_t);
+
+static int another_function(int *y) {
+  if (*y > 0)
+    return *y;
+  return 0;
+}
+
+static void function_which_doesnt_give_up(int **x) {
+   *x = 0;
+}
+
+static void function_which_gives_up(int *x) {
+  for (int i = 0; i < 5; ++i)
+    (*x)++;
+}
+
+static void function_which_gives_up_nested(int *x) {
+  function_which_gives_up(x);
+  for (int i = 0; i < 5; ++i)
+    (*x)++;
+}
+
+static void function_which_doesnt_give_up_nested(int *x, int *y) {
+  *y = another_function(x);
+  function_which_gives_up(x);
+}
+
+void coverage1(int *x) {
+  function_which_gives_up(x);
+  char *m = (char*)malloc(12); // expected-warning {{potential leak}}
+}
+
+void coverage2(int *x) {
+  if (x) {
+    function_which_gives_up(x);
+    char *m = (char*)malloc(12);// expected-warning {{potential leak}}
+  }
+}
+
+void coverage3(int *x) {
+  x++;
+  function_which_gives_up(x);
+  char *m = (char*)malloc(12);// expected-warning {{potential leak}}
+}
+
+void coverage4(int *x) {
+  *x += another_function(x);
+  function_which_gives_up(x);
+  char *m = (char*)malloc(12);// expected-warning {{potential leak}}
+}
+
+void coverage5(int *x) {
+  for (int i = 0; i<7; ++i)
+    function_which_gives_up(x);
+  // The root function gives up here.
+  char *m = (char*)malloc(12); // no-warning
+}
+
+void coverage6(int *x) {
+  for (int i = 0; i<3; ++i) {
+    function_which_gives_up(x);
+  }
+  char *m = (char*)malloc(12); // expected-warning {{potential leak}}
+}
+
+int coverage7_inline(int *i) {
+  function_which_doesnt_give_up(&i);
+  return *i; // expected-warning {{Dereference}}
+}
+
+void coverage8(int *x) {
+  int y;
+  function_which_doesnt_give_up_nested(x, &y);
+  y = (*x)/y;  // expected-warning {{Division by zero}}
+  char *m = (char*)malloc(12); // expected-warning {{potential leak}}
+}
+
+void function_which_gives_up_settonull(int **x) {
+  *x = 0;
+  int y = 0;
+  for (int i = 0; i < 5; ++i)
+    y++;
+}
+
+void coverage9(int *x) {
+  int y = 5;
+  function_which_gives_up_settonull(&x);
+  y = (*x);  // no warning
+}