I have built and tested gcc-4.5.1 on two machines now (results are and get the following fails and wonder if I should be concerned or file a bug report (I have submitted the automated test results script on each host): FAIL: gcc.dg/guality/vla-1.c -O0 line 17 sizeof (a) == 6 FAIL: gcc.dg/guality/vla-1.c -O0 line 24 sizeof (a) == 17 * sizeof (short) FAIL: gcc.dg/guality/vla-1.c -O1 line 17 sizeof (a) == 6 FAIL: gcc.dg/guality/vla-1.c -O1 line 24 sizeof (a) == 17 * sizeof (short) FAIL: gcc.dg/guality/vla-1.c -O2 line 17 sizeof (a) == 6 FAIL: gcc.dg/guality/vla-1.c -O2 line 24 sizeof (a) == 17 * sizeof (short) FAIL: gcc.dg/guality/vla-1.c -O3 -fomit-frame-pointer line 17 sizeof (a) == 6 FAIL: gcc.dg/guality/vla-1.c -O3 -fomit-frame-pointer line 24 sizeof (a) == 17 * sizeof (short) FAIL: gcc.dg/guality/vla-1.c -O3 -g line 17 sizeof (a) == 6 FAIL: gcc.dg/guality/vla-1.c -O3 -g line 24 sizeof (a) == 17 * sizeof (short) FAIL: gcc.dg/guality/vla-1.c -Os line 17 sizeof (a) == 6 FAIL: gcc.dg/guality/vla-1.c -Os line 24 sizeof (a) == 17 * sizeof (short) FAIL: libmudflap.c/pass46-frag.c (-O2) (test for excess errors) FAIL: libmudflap.c/pass46-frag.c (-O2) (test for excess errors) FAIL: libmudflap.c/fail31-frag.c (-O3) output pattern test FAIL: libmudflap.c/pass45-frag.c (-O3) execution test FAIL: libmudflap.c/pass45-frag.c (-O3) output pattern test FAIL: libmudflap.c/pass45-frag.c (-O3) execution test FAIL: libmudflap.c/pass45-frag.c (-O3) output pattern test FAIL: libmudflap.c/pass46-frag.c (-O3) (test for excess errors) FAIL: libmudflap.c/pass46-frag.c (-O3) (test for excess errors) FAIL: libmudflap.c++/pass41-frag.cxx execution test FAIL: libmudflap.c++/pass41-frag.cxx ( -O) execution test FAIL: libmudflap.c++/pass41-frag.cxx (-O2) execution test FAIL: libmudflap.c++/pass41-frag.cxx (-O3) execution test FAIL: abi_check Thanks, -Tom Thomas M. Browder, Jr. Niceville, Florida USA