g++.dg/lto/lto.exp bug

[BELBACHIR Selim]

Hi,

In gcc 4.7.3 I found a bug in the testsuite script g++.dg/lto/lto.exp when a 
target does not support LTO (ENABLE_LTO not defined)

The following lines :

        if { ![check_effective_target_lto] } {
            return
        }

Should be called before :

        g++_init
        lto_init no-mathlib


(Like in gcc.dg/lto/lto.exp)


Otherwise 'lto_init' may hack board_info (removing the mathlib option) without 
being restored by 'lto_finish' because of the brutal return after 
'check_effective_target_lto'


    Selim