https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60874
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Ian Lance Taylor from comment #6) > I don't know why making the types smaller in comment #4 makes any > difference. On a system that does not use split stacks, the runtime will > allocate a 2M stack for each goroutine (see StackMin in > libgo/runtime/proc.c). That is clearly more than large enough to hold a > 8192 byte value. The comments in the test about splitting the stack only > apply to systems that support stack splitting. > > This will need more investigation by somebody with access to an Alpha. I > guess one simple first step would be to verify that USING_SPLIT_STACK and > LINKER_SUPPORTS_SPLIT_STACK are both 0 in the file TARGET/libgo/config.h. I can verify that they are undefined. Maybe the effects of split stack can be ruled out on x86 by forcing it to use libffi closures with non-split stack configuration?