1 files changed, 155 insertions, 16 deletions
diff --git a/test/Analysis/array-struct-region.c b/test/Analysis/array-struct-region.c
index 4b085c8..244bc97 100644
--- a/test/Analysis/array-struct-region.c
+++ b/test/Analysis/array-struct-region.c
@@ -1,32 +1,28 @@
-// RUN: %clang_cc1 -analyze -analyzer-checker=core,experimental.core,experimental.deadcode.UnreachableCode -analyzer-store=region -analyzer-constraints=basic -verify %s
-// RUN: %clang_cc1 -analyze -analyzer-checker=core,experimental.core,experimental.deadcode.UnreachableCode -analyzer-store=region -analyzer-constraints=range -verify %s
+// RUN: %clang_cc1 -analyze -analyzer-checker=core,experimental.core,debug.ExprInspection -analyzer-store=region -analyzer-constraints=basic -analyzer-ipa=inlining -verify %s
+// RUN: %clang_cc1 -analyze -analyzer-checker=core,experimental.core,debug.ExprInspection -analyzer-store=region -analyzer-constraints=range -analyzer-ipa=inlining -verify %s
+
+void clang_analyzer_eval(int);
 
 int string_literal_init() {
   char a[] = "abc";
   char b[2] = "abc"; // expected-warning{{too long}}
   char c[5] = "abc";
 
-  if (a[1] != 'b')
-    return 0; // expected-warning{{never executed}}
-  if (b[1] != 'b')
-    return 0; // expected-warning{{never executed}}
-  if (c[1] != 'b')
-    return 0; // expected-warning{{never executed}}
+  clang_analyzer_eval(a[1] == 'b'); // expected-warning{{TRUE}}
+  clang_analyzer_eval(b[1] == 'b'); // expected-warning{{TRUE}}
+  clang_analyzer_eval(c[1] == 'b'); // expected-warning{{TRUE}}
 
-  if (a[3] != 0)
-    return 0; // expected-warning{{never executed}}
-  if (c[3] != 0)
-    return 0; // expected-warning{{never executed}}
+  clang_analyzer_eval(a[3] == 0); // expected-warning{{TRUE}}
+  clang_analyzer_eval(c[3] == 0); // expected-warning{{TRUE}}
 
-  if (c[4] != 0)
-    return 0; // expected-warning{{never executed}}
+  clang_analyzer_eval(c[4] == 0); // expected-warning{{TRUE}}
 
   return 42;
 }
 
 void nested_compound_literals(int rad) {
-  int vec[6][2] = {{0.195, 0.02}, {0.383, 0.067}, {0.55, 0.169},  // expected-warning 6 {{implicit conversion turns literal floating-point number into integer}}
-                   {0.831, 0.45}, {0.924, 0.617}, {0.98, 0.805}}; // expected-warning 6 {{implicit conversion turns literal floating-point number into integer}}
+  int vec[6][2] = {{0.195, 0.02}, {0.383, 0.067}, {0.55, 0.169},  // expected-warning 6 {{implicit conversion from 'double' to 'int' changes value from}}
+                   {0.831, 0.45}, {0.924, 0.617}, {0.98, 0.805}}; // expected-warning 6 {{implicit conversion from 'double' to 'int' changes value from}}
   int a;
 
   for (a = 0; a < 6; ++a) {
@@ -45,3 +41,146 @@ void nested_compound_literals_float(float rad) {
       vec[a][1] *= rad; // no-warning
   }
 }
+
+
+void struct_as_array() {
+  struct simple { int x; int y; };
+  struct simple a;
+  struct simple *p = &a;
+
+  p->x = 5;
+  clang_analyzer_eval(a.x == 5); // expected-warning{{TRUE}}
+  clang_analyzer_eval(p[0].x == 5); // expected-warning{{TRUE}}
+
+  p[0].y = 5;
+  clang_analyzer_eval(a.y == 5); // expected-warning{{TRUE}}
+  clang_analyzer_eval(p->y == 5); // expected-warning{{TRUE}}
+}
+
+
+// PR13264 / <rdar://problem/11802440>
+struct point { int x; int y; };
+struct circle { struct point o; int r; };
+struct circle get_circle() {
+  struct circle result;
+  result.r = 5;
+  result.o = (struct point){0, 0};
+  return result;
+}
+
+void struct_in_struct() {
+  struct circle c;
+  c = get_circle();
+  // This used to think c.r was undefined because c.o is a LazyCompoundVal.
+  clang_analyzer_eval(c.r == 5); // expected-warning{{TRUE}}
+}
+
+// We also test with floats because we don't model floats right now,
+// and the original bug report used a float.
+struct circle_f { struct point o; float r; };
+struct circle_f get_circle_f() {
+  struct circle_f result;
+  result.r = 5.0;
+  result.o = (struct point){0, 0};
+  return result;
+}
+
+float struct_in_struct_f() {
+  struct circle_f c;
+  c = get_circle_f();
+
+  return c.r; // no-warning
+}
+
+
+int randomInt();
+
+int testSymbolicInvalidation(int index) {
+  int vals[10];
+
+  vals[0] = 42;
+  clang_analyzer_eval(vals[0] == 42); // expected-warning{{TRUE}}
+
+  vals[index] = randomInt();
+  clang_analyzer_eval(vals[0] == 42); // expected-warning{{UNKNOWN}}
+
+  return vals[index]; // no-warning
+}
+
+int testConcreteInvalidation(int index) {
+  int vals[10];
+
+  vals[index] = 42;
+  clang_analyzer_eval(vals[index] == 42); // expected-warning{{TRUE}}
+  vals[0] = randomInt();
+  clang_analyzer_eval(vals[index] == 42); // expected-warning{{UNKNOWN}}
+
+  return vals[0]; // no-warning
+}
+
+
+typedef struct {
+  int x, y, z;
+} S;
+
+S makeS();
+
+int testSymbolicInvalidationStruct(int index) {
+  S vals[10];
+
+  vals[0].x = 42;
+  clang_analyzer_eval(vals[0].x == 42); // expected-warning{{TRUE}}
+
+  vals[index] = makeS();
+  clang_analyzer_eval(vals[0].x == 42); // expected-warning{{UNKNOWN}}
+
+  return vals[index].x; // no-warning
+}
+
+int testConcreteInvalidationStruct(int index) {
+  S vals[10];
+
+  vals[index].x = 42;
+  clang_analyzer_eval(vals[index].x == 42); // expected-warning{{TRUE}}
+  vals[0] = makeS();
+  clang_analyzer_eval(vals[index].x == 42); // expected-warning{{UNKNOWN}}
+
+  return vals[0].x; // no-warning
+}
+
+typedef struct {
+  S a[5];
+  S b[5];
+} SS;
+
+int testSymbolicInvalidationDoubleStruct(int index) {
+  SS vals;
+
+  vals.a[0].x = 42;
+  vals.b[0].x = 42;
+  clang_analyzer_eval(vals.a[0].x == 42); // expected-warning{{TRUE}}
+  clang_analyzer_eval(vals.b[0].x == 42); // expected-warning{{TRUE}}
+
+  vals.a[index] = makeS();
+  clang_analyzer_eval(vals.a[0].x == 42); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(vals.b[0].x == 42); // expected-warning{{TRUE}}
+
+  return vals.b[index].x; // no-warning
+}
+
+int testConcreteInvalidationDoubleStruct(int index) {
+  SS vals;
+
+  vals.a[index].x = 42;
+  vals.b[index].x = 42;
+  clang_analyzer_eval(vals.a[index].x == 42); // expected-warning{{TRUE}}
+  clang_analyzer_eval(vals.b[index].x == 42); // expected-warning{{TRUE}}
+
+  vals.a[0] = makeS();
+  clang_analyzer_eval(vals.a[index].x == 42); // expected-warning{{UNKNOWN}}
+  clang_analyzer_eval(vals.b[index].x == 42); // expected-warning{{TRUE}}
+
+  return vals.b[0].x; // no-warning
+}
+
+