commit 8ab4108df201eaba5853b1e0c50b25afdc8f8cb1
author Davide Italiano <davide@freebsd.org> Sat Jul 23 22:09:04 2016 +0000
committer Davide Italiano <davide@freebsd.org> Sat Jul 23 22:09:04 2016 +0000
tree df7da33e16b8e98f0ef2c359fc244e255d1e5a58
parent 9e99dd9e8b4942e3911112121349d875997fee67

[ELF/Linkerscript] Define an absolute if we find an undefined.

Otherwhise undefined references to symbols defined in linker scripts
are never resolved.

Differential Revision:  https://reviews.llvm.org/D22664

llvm-svn: 276536

lld/ELF/LinkerScript.cpp

diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index 64a6849..b95287a 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -532,7 +532,8 @@
     if (!Cmd || Cmd->Name == ".")
       continue;
 
-    if (Symtab<ELFT>::X->find(Cmd->Name) == nullptr)
+    SymbolBody *B = Symtab<ELFT>::X->find(Cmd->Name);
+    if (!B || B->isUndefined())
       Symtab<ELFT>::X->addAbsolute(Cmd->Name,
                                    Cmd->Hidden ? STV_HIDDEN : STV_DEFAULT);
     else