Fix use of AC_LANG_SOURCE for ifunc attribute testing.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12716

diff --git a/configure.in b/configure.in
index 5c66f45490d6f6328c5051293350a2b028c517f3..2f3f67e0b4236b323f315d3e1651f8360a80dbb7 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1752,7 +1752,7 @@ AM_CONDITIONAL(BUILD_AVX_TESTS, test x$ac_have_as_avx = xyes)
 # automake-level symbol (BUILD_IFUNC_TESTS), used in test Makefile.am's
 AC_MSG_CHECKING([if gcc supports the ifunc attribute])
 
-AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]], [[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
   void bar(void) {}
   void foo(void) __attribute__((ifunc("bar")));
 ]])], [