Todd Rinaldo <toddr@xxxxxxxxxx> writes: > This makes the program hang on the read call: > /usr/local/toddr/bin/x86_64-redhat-linux-gnu-gcc-4.5.0 -o conftest -O2 -Wp,-D_FORTIFY_SOURCE=2 -std=c99 conftest.c -g;./conftest > > Removing any of the options other than -g makes the program run normally. If removing the -D_FORTIFY_SOURCE makes the program work, then I recommend that you compile with --save-temps with and without that option and compare the .i files. Perhaps that will show where the problem lies. Or, the fact that you are using -std=c99 with a glibc compiled with gcc 4.1.2 raises the possibility that you are running into the difference in the semantics of "extern inline". That was cleaned up around the gcc 4.3 time frame. Older versions of glibc assume the gnu89 meaning for "extern inline". That was cleaned up in glibc at some point but I don't know when. See the -fgnu89-inline option. Ian
