[msan] Add source file:line to stack origin reports.

Runtime library part.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@190686 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/msan/msan.h b/lib/msan/msan.h
index 9cf33f0..16dfc0c 100644
--- a/lib/msan/msan.h
+++ b/lib/msan/msan.h
@@ -51,6 +51,8 @@
 void InstallAtExitHandler();
 void ReplaceOperatorsNewAndDelete();
 
+const char *GetOriginDescrIfStack(u32 id, uptr *pc);
+
 void EnterSymbolizer();
 void ExitSymbolizer();
 bool IsInSymbolizer();