Fix bug #4269

[lyx.git] / src / support / lassert.cpp

diff --git a/src/support/lassert.cpp b/src/support/lassert.cpp
index 1e6cd55ecfac9d50a9d6a390a7b8bbb54f551136..c690dbcee03a213a2a10c771dc5ea1c945f50d7b 100644 (file)
--- a/src/support/lassert.cpp
+++ b/src/support/lassert.cpp
@@ -1,26 +1,137 @@
 /**
- * \file assert.cpp
+ * \file lassert.cpp
  * This file is part of LyX, the document processor.
  * Licence details can be found in the file COPYING.
  *
  * \author André Pönitz
+ * \author Peter Kümmel
  *
  * Full author contact details are available in file CREDITS.
  */
 
 #include <config.h>
+#include <lassert.h>
 
+#include "support/convert.h"
 #include "support/debug.h"
+#include "support/docstring.h"
+#include "support/ExceptionMessage.h"
+#include "support/gettext.h"
+#include "support/lstrings.h"
 
 #include <boost/assert.hpp>
 
+#include <QString>
+
+#ifdef LYX_CALLSTACK_PRINTING
+#include <cstdio>
+#include <cstdlib>
+#include <execinfo.h>
+#include <cxxabi.h>
+#endif
+
+
 namespace lyx {
 
-void doAssert(char const * expr,  char const * file, long line)
+using namespace std;
+using namespace support;
+
+
+void doAssertWithCallstack(bool value)
+{
+       if (!value) {
+               printCallStack();
+               BOOST_ASSERT(false);
+       }
+}
+
+
+void doAssert(char const * expr, char const * file, long line)
 {
        LYXERR0("ASSERTION " << expr << " VIOLATED IN " << file << ":" << line);
        // comment this out if not needed
-       BOOST_ASSERT(false);
+       doAssertWithCallstack(false);
+}
+
+
+docstring formatHelper(docstring const & msg,
+       char const * expr, char const * file, long line)
+{
+       docstring const d = _("Assertion %1$s violated in\nfile: %2$s, line: %3$s");
+       LYXERR0("ASSERTION " << expr << " VIOLATED IN " << file << ":" << line);
+
+       return bformat(d, from_ascii(expr), from_ascii(file),
+               convert<docstring>(line)) + '\n' + msg;
+}
+
+
+void doWarnIf(char const * expr, char const * file, long line)
+{
+       docstring const d = _("It should be safe to continue, but you\nmay wish to save your work and restart LyX.");
+       // comment this out if not needed
+       doAssertWithCallstack(false);
+       throw ExceptionMessage(WarningException, _("Warning!"),
+               formatHelper(d, expr, file, line));
+}
+
+
+void doBufErr(char const * expr, char const * file, long line)
+{
+       docstring const d = _("There has been an error with this document.\nLyX will attempt to close it safely.");
+       // comment this out if not needed
+       doAssertWithCallstack(false);
+       throw ExceptionMessage(BufferException, _("Buffer Error!"),
+               formatHelper(d, expr, file, line));
+}
+
+
+void doAppErr(char const * expr, char const * file, long line)
+{
+       docstring const d = _("LyX has encountered an application error\nand will now shut down.");
+       // comment this out if not needed
+       doAssertWithCallstack(false);
+       throw ExceptionMessage(ErrorException, _("Fatal Exception!"),
+               formatHelper(d, expr, file, line));
+}
+
+
+docstring printCallStack()
+{
+#ifndef LYX_CALLSTACK_PRINTING
+       return docstring();
+#else
+       const int depth = 200;
+
+       // get void*'s for all entries on the stack
+       void* array[depth];
+       size_t size = backtrace(array, depth);
+
+       char** messages = backtrace_symbols(array, size);
+
+       docstring bt;
+       for (size_t i = 1; i < size && messages != NULL; i++) {
+               const std::string orig(messages[i]);
+               char* mangled = 0;
+               for (char *p = messages[i]; *p; ++p) {
+                       if (*p == '(') {
+                               *p = 0;
+                               mangled = p + 1;
+                       } else if (*p == '+') {
+                               *p = 0;
+                               break;
+                       }
+               }
+               int status = 0;
+               const char* demangled = abi::__cxa_demangle(mangled, 0, 0, &status);
+               const QByteArray line = QString("(%1) %2: %3\n").arg(i, 3).arg(messages[i])
+                                                               .arg(demangled ? demangled : orig.c_str()).toLocal8Bit();
+               free((void*)demangled);
+
+               fprintf(stderr, "%s", line.constData());
+               bt += from_local8bit(line.constData());
+       }
+               return bt;
+#endif
 }
 
 } // namespace lyx