[PATCH] 8006508 : Wrong frame constructor is called in os_linux_x86.cpp

[Jeremy Manson]

As discussed with David last month.  The frame constructor that is
currently getting called in this case fails if NULL is passed as a PC.  The
fix is to call a constructor that does not expect a PC.

Apologies for the lack of a reproducible test case, but it's basically
impossible to reproduce without a very peculiar and platform-dependent
compilation strategy.

# HG changeset patch
# User jeremymanson
# Date 1358447322 28800
# Node ID b155e0a0e6f030aea5fbdf8cd341efcb2f097a76
# Parent  1a3e54283c54aaa8b3437813e8507fbdc966e5b6
8006508 : Wrong frame constructor is called in os_linux_x86.cpp

diff --git a/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
b/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
--- a/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
+++ b/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
@@ -189,7 +189,7 @@
                 CAST_FROM_FN_PTR(address, os::current_frame));
   if (os::is_first_C_frame(&myframe)) {
     // stack is not walkable
-    return frame(NULL, NULL, NULL);
+    return frame();
   } else {
     return os::get_sender_for_C_frame(&myframe);
   }
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