Add the clang library to the repo (with some of my changes, too).

1 files changed, 92 insertions, 0 deletions

diff --git a/clang/test/Analysis/stack-addr-ps.c b/clang/test/Analysis/stack-addr-ps.c
new file mode 100644
index 0000000..a443a32
--- /dev/null
+++ b/clang/test/Analysis/stack-addr-ps.c
@@ -0,0 +1,92 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -fblocks -verify %s
+
+int* f1() {
+  int x = 0;
+  return &x; // expected-warning{{Address of stack memory associated with local variable 'x' returned}} expected-warning{{address of stack memory associated with local variable 'x' returned}}
+}
+
+int* f2(int y) {
+  return &y;  // expected-warning{{Address of stack memory associated with local variable 'y' returned}} expected-warning{{address of stack memory associated with local variable 'y' returned}}
+}
+
+int* f3(int x, int *y) {
+  int w = 0;
+  
+  if (x)
+    y = &w;
+    
+  return y; // expected-warning{{Address of stack memory associated with local variable 'w' returned to caller}}
+}
+
+void* compound_literal(int x, int y) {
+  if (x)
+    return &(unsigned short){((unsigned short)0x22EF)}; // expected-warning{{Address of stack memory}}
+
+  int* array[] = {};
+  struct s { int z; double y; int w; };
+  
+  if (y)
+    return &((struct s){ 2, 0.4, 5 * 8 }); // expected-warning{{Address of stack memory}}
+    
+  
+  void* p = &((struct s){ 42, 0.4, x ? 42 : 0 });
+  return p; // expected-warning{{Address of stack memory}}
+}
+
+void* alloca_test() {
+  void* p = __builtin_alloca(10);
+  return p; // expected-warning{{Address of stack memory}}
+}
+
+int array_test(int x[2]) {
+  return x[0]; // no-warning
+}
+
+struct baz {
+  int x;
+  int y[2];
+};
+
+int struct_test(struct baz byVal, int flag) {
+  if (flag)  
+    return byVal.x; // no-warning
+  else {
+    return byVal.y[0]; // no-warning
+  }
+}
+
+typedef int (^ComparatorBlock)(int a, int b);
+ComparatorBlock test_return_block(void) {
+  // This block is a global since it has no captures.
+  ComparatorBlock b = ^int(int a, int b){ return a > b; };
+  return b; // no-warning
+}
+
+ComparatorBlock test_return_block_with_capture(int x) {
+  // This block is stack allocated because it has captures.
+  ComparatorBlock b = ^int(int a, int b){ return a > b + x; };
+  return b; // expected-warning{{Address of stack-allocated block}}
+}
+
+ComparatorBlock test_return_block_neg_aux(void);
+ComparatorBlock test_return_block_neg(void) {
+  ComparatorBlock b = test_return_block_neg_aux();
+  return b; // no-warning
+}
+
+// <rdar://problem/7523821>
+int *rdar_7523821_f2() {
+  int a[3];
+  return a; // expected-warning 2 {{ddress of stack memory associated with local variable 'a' returned}}
+};
+
+// Handle blocks that have no captures or are otherwise declared 'static'.
+// <rdar://problem/10348049>
+typedef int (^RDar10348049)(int value);
+RDar10348049 test_rdar10348049(void) {
+  static RDar10348049 b = ^int(int x) {
+    return x + 2;
+  };
+  return b; // no-warning
+}
+