Hi, Thanks for the heads-up.
I also see what you're seeing for my build, and this is a mystery for me as well. The libgo makefile generates "sysinfo.go" by running the C compiler on a source that includes various system headers, so as to capture Go versions of C-specific constants and types. This is done using the -fdump-go-spec=<outfile> command line option. I ran GCC under the debugger and looked at the value for FLT128_MAX at the point where the go-dumpspec code executes, and it is indeed "1.1", so I don't think this is a bug in the Go-specific code. What's more surprising is that when I start with the same compile command used to generate the Go file, remove "-fdump-go-spec, and add in "-E -dM", I do see a correct definition for FLT128_MAX (very weird). Given that Go doesn't use float128, I'm not sure it will really matter a whole lot in the long run, but it is a surprising oddity. Thanks, Than On Mon, Aug 12, 2019 at 11:21 PM Xiangdong JI <xiangdong...@arm.com> wrote: > Hello, > > The .go files generated during building gccgo seem to have a few constants > with weird values, for example: > > // sysinfo.go (on x86-64, latest gcc-9 trunk) > > const ___FLT128_MAX__ = 1.1 > const ___FLT32X_DENORM_MIN__ = 1.1 > > as a comparison, gollvm generates expected values. > Could it be caused by incorrect building setting? > Thanks. > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/b808ccdd-023c-4b95-9db0-2a00b3435735%40googlegroups.com > <https://groups.google.com/d/msgid/golang-nuts/b808ccdd-023c-4b95-9db0-2a00b3435735%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CA%2BUr55EDGqJFzBCW5etNeyzsSNpjzxA2x_goe9NxsEjT0Xuk2Q%40mail.gmail.com.
