wrapper.exp ({tool}_maybe_build_wrapper): Clear wrap_compile_flags before setting it.

2014-10-24  Christophe Lyon  <christophe.lyon@linaro.org>

	* lib/wrapper.exp ({tool}_maybe_build_wrapper): Clear
	wrap_compile_flags before setting it.

From-SVN: r216638

gcc/testsuite/ChangeLog

+2014-10-24  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	* lib/wrapper.exp ({tool}_maybe_build_wrapper): Clear
+	wrap_compile_flags before setting it.
+
 2014-10-24  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* gcc.dg/pr63594-1.c: Apply -mno-mmx to all i?86-*-* and x86_64-*-*

gcc/testsuite/lib/wrapper.exp

@@ -34,9 +34,11 @@ proc ${tool}_maybe_build_wrapper { filename args } {
 	# became true for dejagnu-1.4.4.  The set of warnings and code
 	# that gcc objects on may change, so just make sure -w is always
 	# passed to turn off all warnings.
+	unset_currtarget_info wrap_compile_flags
 	set_currtarget_info wrap_compile_flags \
 	    "$saved_wrap_compile_flags -w $flags"
 	set result [build_wrapper $filename]
+	unset_currtarget_info wrap_compile_flags
 	set_currtarget_info wrap_compile_flags "$saved_wrap_compile_flags"
 	if { $result != "" } {
 	    set gluefile [lindex $result 0]