Tue May 26 17:46:14 CEST 2009  Tobias Rautenkranz <tobias@rautenkranz.ch>
  * Workaround segfault on exit & run test on commit
diff -rN -u old-kde.ui/CMakeLists.txt new-kde.ui/CMakeLists.txt
--- old-kde.ui/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
+++ new-kde.ui/CMakeLists.txt	2014-10-30 07:22:42.000000000 +0100
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 2.6)
+
+project(cl-smoke.kde)
+
+add_subdirectory(util)
diff -rN -u old-kde.ui/src/application.lisp new-kde.ui/src/application.lisp
--- old-kde.ui/src/application.lisp	2014-10-30 07:22:42.000000000 +0100
+++ new-kde.ui/src/application.lisp	2014-10-30 07:22:42.000000000 +0100
@@ -2,6 +2,14 @@
 
 (declaim (optimize (debug 3)))
 
+;;; FIXME crash on quit, Called from ~KIconLoader():
+;;; CL-USER> (cffi:defcfun (kbacktrace "_Z14kRealBacktracei") :pointer
+;;;           (levels :int))
+;;;  KBACKTRACE
+;;; CL-USER> (kbacktrace -1)
+;;;
+;;; Unhandled memory fault at #x0.
+
 (defun app ()
   (assert (app-p))
   (qt:app))
diff -rN -u old-kde.ui/test.lisp new-kde.ui/test.lisp
--- old-kde.ui/test.lisp	1970-01-01 01:00:00.000000000 +0100
+++ new-kde.ui/test.lisp	2014-10-30 07:22:42.000000000 +0100
@@ -0,0 +1,31 @@
+#|
+cmake ./ && make || exit 1
+# LD_PRELOAD causes utf8 decoding errors in sbcl
+# in run-progam used by sysdef.cmake
+sbcl --noinform --noprint --disable-debugger --load $0 --end-toplevel-options -c || exit 1
+LD_PRELOAD=./util/libcl-smoke-disable-backtrace.so exec -a "$0" sbcl --noinform --noprint --disable-debugger --load $0 --end-toplevel-options
+# do not use --script to allow loading mudballs with ${HOME}/.sbclrc
+# Used for testing on darcs record.
+|#
+
+(in-package :sysdef-user)
+
+(defun load-sysdef (pathname system)
+  (load pathname)
+  (setf (mb.sysdef::pathname-of (find-system system)) pathname))
+
+(defun load-sysdef-file (system-name)
+  "Loads a mbd file in the current directory."
+  (load-sysdef (make-pathname :defaults *default-pathname-defaults*
+                                 :name (string-downcase system-name)
+                                 :type "mbd")
+               system-name))
+
+(load-sysdef-file :kde)
+(when (= 2 (length sb-ext:*posix-argv*))
+	(mb:load :kde)
+	(sb-ext:quit))
+	
+(mb:test :kde)
+
+(sb-ext:quit)
diff -rN -u old-kde.ui/util/CMakeLists.txt new-kde.ui/util/CMakeLists.txt
--- old-kde.ui/util/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
+++ new-kde.ui/util/CMakeLists.txt	2014-10-30 07:22:42.000000000 +0100
@@ -0,0 +1,15 @@
+find_package(Qt4)
+set(QT_DONT_USE_QTGUI true)
+include(${QT_USE_FILE})
+
+include(CheckCXXCompilerFlag)
+check_cxx_compiler_flag("-fvisibility=hidden" CXX_VISIBILITY)
+if(CXX_VISIBILITY)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden -fvisibility-inlines-hidden")
+endif(CXX_VISIBILITY)
+
+add_library(cl-smoke-disable-backtrace SHARED backtrace.cpp)
+target_link_libraries(cl-smoke-disable-backtrace ${QT_LIBRARIES})
+
+#install(TARGETS cl-smoke-disable-backtrace
+#	LIBRARY DESTINATION lib)
diff -rN -u old-kde.ui/util/backtrace.cpp new-kde.ui/util/backtrace.cpp
--- old-kde.ui/util/backtrace.cpp	1970-01-01 01:00:00.000000000 +0100
+++ new-kde.ui/util/backtrace.cpp	2014-10-30 07:22:42.000000000 +0100
@@ -0,0 +1,27 @@
+#include <QDebug>
+
+#define BT_EXPORT __attribute__((visibility("default")))
+
+extern "C" {
+/** Overwrites backtrace_symbols in execinfo.h and does nothing.
+ * Work around segfault in:
+ *  ~KIconLoader()
+ *  kRealBacktrace(int)
+ *  backtrace_symbols
+ *
+ * ~KIconLoader() is called at exit when an KApplication has been constructed.
+ * Somehow a negative number is pased as size to backtrace_symbols:
+ *  void* trace[256];
+ *  backtrace_symbols(trace, -1219315128); // => SIGSEGV
+ * and segfaults in sysdeps/generic/elf/backtracesyms.c:65
+ */
+BT_EXPORT char**
+backtrace_symbols(void* const* buffer, int size)
+{
+	qDebug() << "libcl-smoke-disable-backtrace: backtrace_symbols workaround\n"
+		<< "\tbuffer: " << buffer << "size: " <<  size;
+	return NULL;
+}
+
+// overwriting backtrace(void** buffer, int size) does not work!?
+}