It appears that Tim & I are the only ones to test the 4.3.0-20070622 on Cygwin. Although I had only 12 more GCC failures than Tim had, I thought it might be prudent (and instructive) for me to dig a little deeper. Comparing our gcc.log files most of my additional failures had an (internal compiler error) notation, which did not appear at all in Tim's log. Making the assumption that fixing one problem can often fix multiple test failures I focused on the first appearance of this failure. Cleaning out the extraneous path information and duplicate lines, this first failure pattern for our runs can be summarized as follows: # Lee's gcc.log: PASS: xgcc -O0 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c PASS: xgcc -O1 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c FAIL: xgcc -O2 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c gcc.c-torture/compile/20001226-1.c: In function 'foo': gcc.c-torture/compile/20001226-1.c:23: internal compiler error: Segmentation fault FAIL: xgcc -O3 -w -fomit-frame-pointer -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c gcc.c-torture/compile/20001226-1.c: In function 'foo': gcc.c-torture/compile/20001226-1.c:23: internal compiler error: Segmentation fault FAIL: xgcc -O3 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c gcc.c-torture/compile/20001226-1.c: In function 'foo': gcc.c-torture/compile/20001226-1.c:23: internal compiler error: Segmentation fault FAIL: xgcc -Os -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c gcc.c-torture/compile/20001226-1.c: In function 'foo': gcc.c-torture/compile/20001226-1.c:23: internal compiler error: Segmentation fault # Tim's gcc.log: PASS: xgcc -O0 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c PASS: xgcc -O1 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c PASS: xgcc -O2 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c PASS: xgcc -O3 -w -fomit-frame-pointer -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c FAIL: xgcc -O3 -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c /cygdrive/c/Temp/cc27F72c.s: Assembler messages: /cygdrive/c/Temp/cc27F72c.s:0: Warning: end of file not at end of a line; newline inserted /cygdrive/c/Temp/cc27F72c.s:17: Warning: .stabs: missing comma (test for excess errors) PASS: xgcc -Os -w -fno-show-column -o 20001226-1.o gcc.c-torture/compile/20001226-1.c The test file 20001226-1.c goes through 6 different optimization patterns and I have the same failure on 4 of them. Tim had a different failure on one of the -O3 patterns. I don't know how to proceed from here. I have a hunch the difference might be some difference in library versions, but I don't know where to look. Anybody have any ideas? Regards, Lee.