From f294f25d3ab54c6a3267cd5c1c82d25d6fdbee58 Mon Sep 17 00:00:00 2001 From: Viktor Kutuzov Date: Thu, 10 Jul 2014 09:16:58 +0000 Subject: [PATCH] Make sanitizers' interceptors non-weak on FreeBSD Differential Revision: http://reviews.llvm.org/D4418 llvm-svn: 212693 --- compiler-rt/lib/interception/interception.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/compiler-rt/lib/interception/interception.h b/compiler-rt/lib/interception/interception.h index ac982f7..743c88d 100644 --- a/compiler-rt/lib/interception/interception.h +++ b/compiler-rt/lib/interception/interception.h @@ -135,6 +135,16 @@ const interpose_substitution substitution_##func_name[] \ extern "C" ret_type func(__VA_ARGS__); # define DECLARE_WRAPPER_WINAPI(ret_type, func, ...) \ extern "C" __declspec(dllimport) ret_type __stdcall func(__VA_ARGS__); +#elif defined(__FreeBSD__) +# define WRAP(x) __interceptor_ ## x +# define WRAPPER_NAME(x) "__interceptor_" #x +# define INTERCEPTOR_ATTRIBUTE __attribute__((visibility("default"))) +// FreeBSD's dynamic linker (incompliantly) gives non-weak symbols higher +// priority than weak ones so weak aliases won't work for indirect calls +// in position-independent (-fPIC / -fPIE) mode. +# define DECLARE_WRAPPER(ret_type, func, ...) \ + extern "C" ret_type func(__VA_ARGS__) \ + __attribute__((alias("__interceptor_" #func), visibility("default"))); #else # define WRAP(x) __interceptor_ ## x # define WRAPPER_NAME(x) "__interceptor_" #x -- 2.7.4