Implemented support for C++ Exceptions

We implement the Itanium ABI unwinding base-API, and leave the
C++-specific parts to libcxxabi.

Co-authored-by: Lukas Wölfer <lukas.woelfer@rwth-aachen.de>

1 files changed, 33 insertions, 0 deletions

diff --git a/test/CXX/symex/libc++/exception.cpp b/test/CXX/symex/libc++/exception.cpp
new file mode 100644
index 00000000..b46d474e
--- /dev/null
+++ b/test/CXX/symex/libc++/exception.cpp
@@ -0,0 +1,33 @@
+// REQUIRES: not-msan
+// Disabling msan because it times out on CI
+// REQUIRES: libcxx
+// RUN: %clangxx %s -emit-llvm %O0opt -c -std=c++11 -I "%libcxx_include" -g -nostdinc++ -o %t1.bc
+// RUN: rm -rf %t.klee-out
+// RUN: %klee --output-dir=%t.klee-out --libc=uclibc --libcxx %t1.bc 2>&1 | FileCheck %s
+
+#include "klee/klee.h"
+#include <cstdio>
+
+int main(int argc, char **args) {
+  int x = klee_int("Test");
+
+  try {
+    if (x % 2 == 0) {
+      printf("Normal return\n");
+      // CHECK-DAG: Normal return
+      return 0;
+    }
+    throw x;
+  } catch (int b) {
+    if (b % 3 == 0) {
+      printf("First exceptional return\n");
+      // CHECK-DAG: First exceptional return
+      return 2;
+    }
+    printf("Second exceptional return\n");
+    // CHECK-DAG: Second exceptional return
+    return 3;
+  }
+}
+
+// CHECK-DAG: KLEE: done: completed paths = 3