From ed61c0bc76a7b9001d7639a908c955d0fae35bac Mon Sep 17 00:00:00 2001 From: Anton Korobeynikov Date: Mon, 10 Mar 2008 22:36:53 +0000 Subject: [PATCH] Add sanity checks git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48184 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Linker/LinkModules.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/lib/Linker/LinkModules.cpp b/lib/Linker/LinkModules.cpp index 53fce4893fd..3d6e52602b1 100644 --- a/lib/Linker/LinkModules.cpp +++ b/lib/Linker/LinkModules.cpp @@ -659,6 +659,11 @@ static bool LinkAlias(Module *Dest, const Module *Src, // The only allowed way is to link alias with external declaration. if (DGV->isDeclaration()) { + // But only if aliasee is global too... + if (!isa(DAliasee)) + return Error(Err, "Global-Alias Collision on '" + SGA->getName() + + "': aliasee is not global variable"); + NewGA = new GlobalAlias(SGA->getType(), SGA->getLinkage(), SGA->getName(), DAliasee, Dest); CopyGVAttributes(NewGA, SGA); @@ -685,6 +690,11 @@ static bool LinkAlias(Module *Dest, const Module *Src, // The only allowed way is to link alias with external declaration. if (DF->isDeclaration()) { + // But only if aliasee is function too... + if (!isa(DAliasee)) + return Error(Err, "Function-Alias Collision on '" + SGA->getName() + + "': aliasee is not function"); + NewGA = new GlobalAlias(SGA->getType(), SGA->getLinkage(), SGA->getName(), DAliasee, Dest); CopyGVAttributes(NewGA, SGA); -- 2.11.0