[analyzer] fix inlining's handling of mapping actual to formal arguments and limit the call stack depth. The analyzer can now accurately simulate factorial for limited depths.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148036 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/inline.c b/test/Analysis/inline.c
index e3c7e83..de807fb 100644
--- a/test/Analysis/inline.c
+++ b/test/Analysis/inline.c
@@ -28,3 +28,33 @@
test2_f1(test2_f2()); // expected-warning{{too many arguments in call to 'test2_f1'}}
}
+// Test that inlining works with recursive functions.
+
+unsigned factorial(unsigned x) {
+ if (x <= 1)
+ return 1;
+ return x * factorial(x - 1);
+}
+
+void test_factorial() {
+ if (factorial(3) == 6) {
+ int *p = 0;
+ *p = 0xDEADBEEF; // expected-warning {{null}}
+ }
+ else {
+ int *p = 0;
+ *p = 0xDEADBEEF; // no-warning
+ }
+}
+
+void test_factorial_2() {
+ unsigned x = factorial(3);
+ if (x == factorial(3)) {
+ int *p = 0;
+ *p = 0xDEADBEEF; // expected-warning {{null}}
+ }
+ else {
+ int *p = 0;
+ *p = 0xDEADBEEF; // no-warning
+ }
+}