issue 170 - Report assertion type in minidump_stackwalk output. r=mark at http://breakpad.appspot.com/45001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@433 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/google_breakpad/processor/minidump.h

@@ -639,6 +639,46 @@ class MinidumpException : public MinidumpStream {
   MinidumpContext*     context_;
 };
 
+// MinidumpAssertion wraps MDRawAssertionInfo, which contains information
+// about an assertion that caused the minidump to be generated.
+class MinidumpAssertion : public MinidumpStream {
+ public:
+  virtual ~MinidumpAssertion();
+
+  const MDRawAssertionInfo* assertion() const {
+    return valid_ ? &assertion_ : NULL;
+  }
+
+  string expression() const {
+    return valid_ ? expression_ : "";
+  }
+
+  string function() const {
+    return valid_ ? function_ : "";
+  }
+
+  string file() const {
+    return valid_ ? file_ : "";
+  }
+
+  // Print a human-readable representation of the object to stdout.
+  void Print();
+
+ private:
+  friend class Minidump;
+
+  static const u_int32_t kStreamType = MD_ASSERTION_INFO_STREAM;
+
+  explicit MinidumpAssertion(Minidump* minidump);
+
+  bool Read(u_int32_t expected_size);
+
+  MDRawAssertionInfo assertion_;
+  string expression_;
+  string function_;
+  string file_;
+};
+
 
 // MinidumpSystemInfo wraps MDRawSystemInfo and provides information about
 // the system on which the minidump was generated.  See also MinidumpMiscInfo.
@@ -788,6 +828,7 @@ class Minidump {
   MinidumpModuleList* GetModuleList();
   MinidumpMemoryList* GetMemoryList();
   MinidumpException* GetException();
+  MinidumpAssertion* GetAssertion();
   MinidumpSystemInfo* GetSystemInfo();
   MinidumpMiscInfo* GetMiscInfo();
   MinidumpBreakpadInfo* GetBreakpadInfo();

src/google_breakpad/processor/minidump_processor.h

@@ -141,6 +141,11 @@ class MinidumpProcessor {
     return (p != PROCESS_SYMBOL_SUPPLIER_INTERRUPTED);
   }
 
+  // Returns a textual representation of an assertion included
+  // in the minidump.  Returns an empty string if this information
+  // does not exist or cannot be determined.
+  static string GetAssertion(Minidump *dump);
+
  private:
   SymbolSupplier *supplier_;
   SourceLineResolverInterface *resolver_;

src/google_breakpad/processor/process_state.h

@@ -61,6 +61,7 @@ class ProcessState {
   bool crashed() const { return crashed_; }
   string crash_reason() const { return crash_reason_; }
   u_int64_t crash_address() const { return crash_address_; }
+  string assertion() const { return assertion_; }
   int requesting_thread() const { return requesting_thread_; }
   const vector<CallStack*>* threads() const { return &threads_; }
   const vector<MinidumpMemoryRegion*>* thread_memory_regions() const {
@@ -92,6 +93,11 @@ class ProcessState {
   // this will be the address of the instruction that caused the fault.
   u_int64_t crash_address_;
 
+  // If there was an assertion that was hit, a textual representation
+  // of that assertion, possibly including the file and line at which
+  // it occurred.
+  string assertion_;
+
   // The index of the thread that requested a dump be written in the
   // threads vector.  If a dump was produced as a result of a crash, this
   // will point to the thread that crashed.  If the dump was produced as