http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42643
--- Comment #2 from mi+gcc at aldan dot algebra.com 2012-01-06 20:08:54 UTC --- Created attachment 26259 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26259 Live test case (file from Mozilla's NSS package) Even when using gcc-4.6 (more specifically gcc version 4.6.3 20111104 (prerelease) (FreeBSD Ports Collection)), I still get a bogus warning on the attached file, unless the optimization level is at -O3 AND the -fPIC is not specified: mi@narawntapu:nss/lib/util (1778) gcc46 -Wall -O3 -c nssb64e.i mi@narawntapu:nss/lib/util (1779) gcc46 -Wall -O2 -c nssb64e.i nssb64e.i: In function 'NSSBase64_EncodeItem_Util': nssb64e.i:3239:15: warning: 'out_len' may be used uninitialized in this function [-Wuninitialized] mi@narawntapu:nss/lib/util (1780) gcc46 -Wall -O3 -fPIC -c nssb64e.i nssb64e.i: In function 'NSSBase64_EncodeItem_Util': nssb64e.i:3239:15: warning: 'out_len' may be used uninitialized in this function [-Wuninitialized]
