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

1 files changed, 88 insertions, 0 deletions

diff --git a/clang/test/Analysis/outofbound.c b/clang/test/Analysis/outofbound.c
new file mode 100644
index 0000000..2e7a7d3
--- /dev/null
+++ b/clang/test/Analysis/outofbound.c
@@ -0,0 +1,88 @@
+// RUN: %clang_cc1 -Wno-array-bounds -analyze -analyzer-checker=core,experimental.unix,experimental.security.ArrayBound -analyzer-store=region -verify %s
+
+typedef __typeof(sizeof(int)) size_t;
+void *malloc(size_t);
+void *calloc(size_t, size_t);
+
+char f1() {
+  char* s = "abcd";
+  char c = s[4]; // no-warning
+  return s[5] + c; // expected-warning{{Access out-of-bound array element (buffer overflow)}}
+}
+
+void f2() {
+  int *p = malloc(12);
+  p[3] = 4; // expected-warning{{Access out-of-bound array element (buffer overflow)}}
+}
+
+struct three_words {
+  int c[3];
+};
+
+struct seven_words {
+  int c[7];
+};
+
+void f3() {
+  struct three_words a, *p;
+  p = &a;
+  p[0] = a; // no-warning
+  p[1] = a; // expected-warning{{Access out-of-bound array element (buffer overflow)}}
+}
+
+void f4() {
+  struct seven_words c;
+  struct three_words a, *p = (struct three_words *)&c;
+  p[0] = a; // no-warning
+  p[1] = a; // no-warning
+  p[2] = a; // expected-warning{{Access out-of-bound array element (buffer overflow)}}
+}
+
+void f5() {
+  char *p = calloc(2,2);
+  p[3] = '.'; // no-warning
+  p[4] = '!'; // expected-warning{{out-of-bound}}
+}
+
+void f6() {
+  char a[2];
+  int *b = (int*)a;
+  b[1] = 3; // expected-warning{{out-of-bound}}
+}
+
+void f7() {
+  struct three_words a;
+  a.c[3] = 1; // expected-warning{{out-of-bound}}
+}
+
+void vla(int a) {
+  if (a == 5) {
+    int x[a];
+    x[4] = 4; // no-warning
+    x[5] = 5; // expected-warning{{out-of-bound}}
+  }
+}
+
+void alloca_region(int a) {
+  if (a == 5) {
+    char *x = __builtin_alloca(a);
+    x[4] = 4; // no-warning
+    x[5] = 5; // expected-warning{{out-of-bound}}
+  }
+}
+
+int symbolic_index(int a) {
+  int x[2] = {1, 2};
+  if (a == 2) {
+    return x[a]; // expected-warning{{out-of-bound}}
+  }
+  return 0;
+}
+
+int symbolic_index2(int a) {
+  int x[2] = {1, 2};
+  if (a < 0) {
+    return x[a]; // expected-warning{{out-of-bound}}
+  }
+  return 0;
+}