From 835e972e6bc963bf37be81106635c800ae6c6b66 Mon Sep 17 00:00:00 2001
From: kai <kai@redstar.de>
Date: Fri, 25 Oct 2013 16:15:52 +0200
Subject: [PATCH] Fix va_arg handling.

The change of symbol emission ignored the fact that the va_arg intrinsic must be
handled in a special way. This commit corrects the omission (which leads to seg
faults on Linux/PPC64).
---
 gen/llvmhelpers.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gen/llvmhelpers.cpp b/gen/llvmhelpers.cpp
index d7170fe3..0819f2ed 100644
--- a/gen/llvmhelpers.cpp
+++ b/gen/llvmhelpers.cpp
@@ -1916,7 +1916,8 @@ DValue* DtoSymbolAddress(const Loc& loc, Type* type, Declaration* decl)
             fatal();
         }
         DtoResolveFunction(fdecl);
-        return new DFuncValue(fdecl, fdecl->ir.irFunc->func);
+        assert(fdecl->llvmInternal == LLVMva_arg || fdecl->ir.irFunc);
+        return new DFuncValue(fdecl, fdecl->ir.irFunc ? fdecl->ir.irFunc->func : 0);
     }
 
     if (SymbolDeclaration* sdecl = decl->isSymbolDeclaration())
@@ -2028,4 +2029,4 @@ FuncDeclaration* getParentFunc(Dsymbol* sym, bool stopOnStatic) {
     }
 
     return (parent ? parent->isFuncDeclaration() : NULL);
-}
\ No newline at end of file
+}