Enable exceptions raising on assert on Win32

This patch changes the Win32 version to call RaiseException instead of abort
(which eventually calls TerminateProcess). This allows crash dumps to be sent
correctly instead of the process disappearing.
Signed-off-by: Paul Betts <paul@paulbetts.org>

src/err.cpp

@@ -62,6 +62,19 @@ const char *zmq::errno_to_string (int errno_)
     }
 }
 
+void zmq::zmq_abort(const char *errmsg_)
+{
+#if defined ZMQ_HAVE_WINDOWS
+
+    //  Raise STATUS_FATAL_APP_EXIT.
+    ULONG_PTR extra_info [1];
+    extra_info [0] = (ULONG_PTR) errmsg_;
+    RaiseException (0x40000015, EXCEPTION_NONCONTINUABLE, 1, extra_info);
+#else
+    abort ();
+#endif
+}
+
 #ifdef ZMQ_HAVE_WINDOWS
 
 const char *zmq::wsa_error()

src/err.hpp

@@ -42,6 +42,7 @@
 namespace zmq
 {
     const char *errno_to_string (int errno_);
+    void zmq_abort (const char *errmsg_);
 }
 
 #ifdef ZMQ_HAVE_WINDOWS
@@ -51,7 +52,7 @@ namespace zmq
     const char *wsa_error ();
     const char *wsa_error_no (int no_);
     void win_error (char *buffer_, size_t buffer_size_);
-    void wsa_error_to_errno (); 
+    void wsa_error_to_errno ();
 }
 
 //  Provides convenient way to check WSA-style errors on Windows.
@@ -62,7 +63,7 @@ namespace zmq
             if (errstr != NULL) {\
                 fprintf (stderr, "Assertion failed: %s (%s:%d)\n", errstr, \
                     __FILE__, __LINE__);\
-                abort ();\
+                zmq::zmq_abort (errstr);\
             }\
         }\
     } while (false)
@@ -74,7 +75,7 @@ namespace zmq
         if (errstr != NULL) {\
             fprintf (stderr, "Assertion failed: %s (%s:%d)\n", errstr, \
                 __FILE__, __LINE__);\
-            abort ();\
+            zmq::zmq_abort (errstr);\
         }\
     } while (false)
 
@@ -86,7 +87,7 @@ namespace zmq
             zmq::win_error (errstr, 256);\
             fprintf (stderr, "Assertion failed: %s (%s:%d)\n", errstr, \
                 __FILE__, __LINE__);\
-            abort ();\
+            zmq::zmq_abort (errstr);\
         }\
     } while (false)
 
@@ -100,7 +101,7 @@ namespace zmq
         if (unlikely (!(x))) {\
             fprintf (stderr, "Assertion failed: %s (%s:%d)\n", #x, \
                 __FILE__, __LINE__);\
-            abort ();\
+            zmq::zmq_abort (#x);\
         }\
     } while (false) 
 
@@ -108,9 +109,9 @@ namespace zmq
 #define errno_assert(x) \
     do {\
         if (unlikely (!(x))) {\
-            perror (NULL);\
-            fprintf (stderr, "%s (%s:%d)\n", #x, __FILE__, __LINE__);\
-            abort ();\
+            const char *errstr = strerror (errno);\
+            fprintf (stderr, "%s (%s:%d)\n", errstr, __FILE__, __LINE__);\
+            zmq::zmq_abort (errstr);\
         }\
     } while (false)
 
@@ -118,8 +119,9 @@ namespace zmq
 #define posix_assert(x) \
     do {\
         if (unlikely (x)) {\
-            fprintf (stderr, "%s (%s:%d)\n", strerror (x), __FILE__, __LINE__);\
-            abort ();\
+            const char *errstr = strerror (x);\
+            fprintf (stderr, "%s (%s:%d)\n", errstr, __FILE__, __LINE__);\
+            zmq::zmq_abort (errstr);\
         }\
     } while (false)
 
@@ -129,7 +131,7 @@ namespace zmq
         if (unlikely (x)) {\
             const char *errstr = gai_strerror (x);\
             fprintf (stderr, "%s (%s:%d)\n", errstr, __FILE__, __LINE__);\
-            abort ();\
+            zmq::zmq_abort (errstr);\
         }\
     } while (false)
 
@@ -139,7 +141,7 @@ namespace zmq
         if (unlikely (!x)) {\
             fprintf (stderr, "FATAL ERROR: OUT OF MEMORY (%s:%d)\n",\
                 __FILE__, __LINE__);\
-            abort ();\
+            zmq::zmq_abort ("FATAL ERROR: OUT OF MEMORY");\
         }\
     } while (false)