vendor/clang/clang-trunk-r338150

1 files changed, 120 insertions, 4 deletions

diff --git a/test/Analysis/bstring.cpp b/test/Analysis/bstring.cpp
index fea76cc082fa..19978f913cb1 100644
--- a/test/Analysis/bstring.cpp
+++ b/test/Analysis/bstring.cpp
@@ -1,7 +1,8 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
-// RUN: %clang_analyze_cc1 -DUSE_BUILTINS -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
-// RUN: %clang_analyze_cc1 -DVARIANT -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
-// RUN: %clang_analyze_cc1 -DUSE_BUILTINS -DVARIANT -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.cstring,unix.Malloc,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
+// RUN: %clang_analyze_cc1 -DUSE_BUILTINS -analyzer-checker=core,unix.cstring,unix.Malloc,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
+// RUN: %clang_analyze_cc1 -DVARIANT -analyzer-checker=core,unix.cstring,alpha.unix.cstring,unix.Malloc,debug.ExprInspection -analyzer-store=region -verify %s
+// RUN: %clang_analyze_cc1 -DUSE_BUILTINS -DVARIANT -analyzer-checker=core,unix.cstring,alpha.unix.cstring,unix.Malloc,debug.ExprInspection -analyzer-store=region -verify %s
+// RUN: %clang_analyze_cc1 -DSUPPRESS_OUT_OF_BOUND -analyzer-checker=core,unix.cstring,unix.Malloc,alpha.unix.cstring.BufferOverlap,alpha.unix.cstring.NotNullTerminated,debug.ExprInspection -analyzer-store=region -verify %s
 
 #include "Inputs/system-header-simulator-cxx.h"
 #include "Inputs/system-header-simulator-for-malloc.h"
@@ -77,3 +78,118 @@ class b {
   unsigned *f;
 };
 }
+
+void *memset(void *dest, int ch, std::size_t count);
+namespace memset_non_pod {
+class Base {
+public:
+  int b_mem;
+  Base() : b_mem(1) {}
+};
+
+class Derived : public Base {
+public:
+  int d_mem;
+  Derived() : d_mem(2) {}
+};
+
+void memset1_inheritance() {
+  Derived d;
+  memset(&d, 0, sizeof(Derived));
+  clang_analyzer_eval(d.b_mem == 0); // expected-warning{{TRUE}}
+  clang_analyzer_eval(d.d_mem == 0); // expected-warning{{TRUE}}
+}
+
+#ifdef SUPPRESS_OUT_OF_BOUND
+void memset2_inheritance_field() {
+  Derived d;
+  memset(&d.d_mem, 0, sizeof(Derived));
+  clang_analyzer_eval(d.b_mem == 0); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(d.d_mem == 0); // expected-warning{{UNKNOWN}}
+}
+
+void memset3_inheritance_field() {
+  Derived d;
+  memset(&d.b_mem, 0, sizeof(Derived));
+  clang_analyzer_eval(d.b_mem == 0); // expected-warning{{TRUE}}
+  clang_analyzer_eval(d.d_mem == 0); // expected-warning{{TRUE}}
+}
+#endif
+
+void memset4_array_nonpod_object() {
+  Derived array[10];
+  clang_analyzer_eval(array[1].b_mem == 1); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(array[1].d_mem == 2); // expected-warning{{UNKNOWN}}
+  memset(&array[1], 0, sizeof(Derived));
+  clang_analyzer_eval(array[1].b_mem == 0); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(array[1].d_mem == 0); // expected-warning{{UNKNOWN}}
+}
+
+void memset5_array_nonpod_object() {
+  Derived array[10];
+  clang_analyzer_eval(array[1].b_mem == 1); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(array[1].d_mem == 2); // expected-warning{{UNKNOWN}}
+  memset(array, 0, sizeof(array));
+  clang_analyzer_eval(array[1].b_mem == 0); // expected-warning{{TRUE}}
+  clang_analyzer_eval(array[1].d_mem == 0); // expected-warning{{TRUE}}
+}
+
+void memset6_new_array_nonpod_object() {
+  Derived *array = new Derived[10];
+  clang_analyzer_eval(array[2].b_mem == 1); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(array[2].d_mem == 2); // expected-warning{{UNKNOWN}}
+  memset(array, 0, 10 * sizeof(Derived));
+  clang_analyzer_eval(array[2].b_mem == 0); // expected-warning{{TRUE}}
+  clang_analyzer_eval(array[2].d_mem == 0); // expected-warning{{TRUE}}
+  delete[] array;
+}
+
+void memset7_placement_new() {
+  Derived *d = new Derived();
+  clang_analyzer_eval(d->b_mem == 1); // expected-warning{{TRUE}}
+  clang_analyzer_eval(d->d_mem == 2); // expected-warning{{TRUE}}
+
+  memset(d, 0, sizeof(Derived));
+  clang_analyzer_eval(d->b_mem == 0); // expected-warning{{TRUE}}
+  clang_analyzer_eval(d->d_mem == 0); // expected-warning{{TRUE}}
+
+  Derived *d1 = new (d) Derived();
+  clang_analyzer_eval(d1->b_mem == 1); // expected-warning{{TRUE}}
+  clang_analyzer_eval(d1->d_mem == 2); // expected-warning{{TRUE}}
+
+  memset(d1, 0, sizeof(Derived));
+  clang_analyzer_eval(d->b_mem == 0); // expected-warning{{TRUE}}
+  clang_analyzer_eval(d->d_mem == 0); // expected-warning{{TRUE}}
+}
+
+class BaseVirtual {
+public:
+  int b_mem;
+  virtual int get() { return 1; }
+};
+
+class DerivedVirtual : public BaseVirtual {
+public:
+  int d_mem;
+};
+
+#ifdef SUPPRESS_OUT_OF_BOUND
+void memset8_virtual_inheritance_field() {
+  DerivedVirtual d;
+  memset(&d.b_mem, 0, sizeof(Derived));
+  clang_analyzer_eval(d.b_mem == 0); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(d.d_mem == 0); // expected-warning{{UNKNOWN}}
+}
+#endif
+} // namespace memset_non_pod
+
+#ifdef SUPPRESS_OUT_OF_BOUND
+void memset1_new_array() {
+  int *array = new int[10];
+  memset(array, 0, 10 * sizeof(int));
+  clang_analyzer_eval(array[2] == 0); // expected-warning{{TRUE}}
+  memset(array + 1, 'a', 10 * sizeof(9));
+  clang_analyzer_eval(array[2] == 0); // expected-warning{{UNKNOWN}}
+  delete[] array;
+}
+#endif