Fix corruption of non-C++ symbols by the demangler.

Signed-off-by: Jan Kratochvil <[email protected]>

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/testfile-backtrace-demangle.cc b/tests/testfile-backtrace-demangle.cc
new file mode 100644
index 00000000..6daa4297
--- /dev/null
+++ b/tests/testfile-backtrace-demangle.cc
@@ -0,0 +1,47 @@
+/* Test program for C++ demangled unwinding.
+   Copyright (C) 2014 Red Hat, Inc.
+   This file is part of elfutils.
+
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   elfutils is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+#define NOINLINE_NOCLONE __attribute__ ((noinline, noclone))
+#else
+#define NOINLINE_NOCLONE __attribute__ ((noinline))
+#endif
+
+static void NOINLINE_NOCLONE
+cxxfunc (int i)
+{
+  *(volatile int *)0=0;
+  // Avoid tail call optimization.
+  asm volatile ("");
+}
+
+extern "C"
+{
+  static void NOINLINE_NOCLONE
+  f (void)
+  {
+    cxxfunc(1);
+    // Avoid tail call optimization.
+    asm volatile ("");
+  }
+}
+
+int
+main()
+{
+  f();
+}