[llvm] r186035 - Add a comment.

[Adrian Prantl]

Author: adrian
Date: Wed Jul 10 16:08:02 2013
New Revision: 186035

URL: http://llvm.org/viewvc/llvm-project?rev=186035&view=rev
Log:
Add a comment.

Modified:
    llvm/trunk/test/DebugInfo/X86/dbg_value_direct.ll

Modified: llvm/trunk/test/DebugInfo/X86/dbg_value_direct.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/dbg_value_direct.ll?rev=186035&r1=186034&r2=186035&view=diff
==============================================================================
--- llvm/trunk/test/DebugInfo/X86/dbg_value_direct.ll (original)
+++ llvm/trunk/test/DebugInfo/X86/dbg_value_direct.ll Wed Jul 10 16:08:02 2013
@@ -1,5 +1,44 @@
 ; RUN: llc -filetype=obj -O0 -stack-protector-buffer-size=1 < %s
 ; Test that we handle DBG_VALUEs in a register without crashing.
+;
+; Generated and reduced from: (with -fsanitize=address)
+; class C;
+; template < typename, typename = int, typename = C > class A;
+; class B
+; {
+; };
+; class C:B
+; {
+; public:
+;     C (const C &):B ()
+;     {
+;     }
+; };
+; template < typename _CharT, typename, typename _Alloc > class A
+; {
+;     struct D:_Alloc
+;     {
+;     };
+;     D _M_dataplus;
+; public:
+;     A (_CharT *);
+; };
+;
+; template < typename _CharT, typename _Traits,
+;          typename _Alloc > A < _CharT > operator+ (A < _Traits, _Alloc >,
+;                  const _CharT *)
+; {
+;     A < _CharT > a (0);
+;     return a;
+; }
+;
+; int
+; main ()
+; {
+;     A < int >b = 0;
+;     A < char >c = b + "/glob_test_root/*a";
+; }
+
 %class.A = type { %"struct.A<int, int, C>::D" }
 %"struct.A<int, int, C>::D" = type { i8 }
 %class.A.0 = type { %"struct.A<char, int, C>::D" }