From: Rich Felker <dalias@aerifal.cx>
Date: Wed, 24 Jul 2013 15:53:23 +0000 (-0400)
Subject: support STB_GNU_UNIQUE symbol bindings in dynamic linker
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=e152ee9778846c1f233641b2d3562ccdb081c6a9

support STB_GNU_UNIQUE symbol bindings in dynamic linker

these are needed for some C++ library binaries including most builds
of libstdc++. I'm not entirely clear on the rationale. this patch does
not implement any special semantics for them, but as far as I can
tell, no special treatment is needed in correctly-linked programs;
this binding seems to exist only for catching incorrectly-linked
programs.
---

diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index 98a18bba..f4c32ffe 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -190,7 +190,7 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
 }
 
 #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
-#define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK)
+#define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
 
 static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
 {