Added constructor to frame that accepts function addresses

apolukhin · apolukhin · commit 77492bc51724 · 2017-05-06T10:17:38.000+03:00
diff --git a/example/debug_function.cpp b/example/debug_function.cpp
@@ -11,8 +11,10 @@
 #include <cstdlib>      // std::exit
 
 void print_signal_handler_and_exit() {
-    void* p = reinterpret_cast<void*>(::signal(SIGSEGV, SIG_DFL));
-    boost::stacktrace::frame f(p);
+    typedef void(*function_t)(int);
+
+    function_t old_signal_function = ::signal(SIGSEGV, SIG_DFL);
+    boost::stacktrace::frame f(old_signal_function);
     std::cout << f << std::endl;
     std::exit(0);
 }
diff --git a/include/boost/stacktrace/detail/frame_decl.hpp b/include/boost/stacktrace/detail/frame_decl.hpp
@@ -18,6 +18,7 @@
 #include <boost/core/explicit_operator_bool.hpp>
 
 #include <boost/stacktrace/safe_dump_to.hpp> // boost::stacktrace::detail::native_frame_ptr_t
+#include <boost/stacktrace/detail/void_ptr_cast.hpp>
 
 #include <boost/stacktrace/detail/push_options.pp>
 
@@ -82,6 +83,17 @@ class frame {
         : addr_(addr)
     {}
 
+    /// @brief Constructs frame that references function_addr and could later generate information about that function using platform specific features.
+    ///
+    /// @b Complexity: O(1).
+    ///
+    /// @b Async-Handler-Safety: Safe.
+    /// @throws Nothing.
+    template <class T>
+    explicit frame(T* function_addr) BOOST_NOEXCEPT
+        : addr_(boost::stacktrace::detail::void_ptr_cast<native_frame_ptr_t>(function_addr))
+    {}
+
     /// @returns Name of the frame (function name in a human readable form).
     ///
     /// @b Complexity: unknown (lots of platform specific work).
