https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114454
--- Comment #3 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
Uni-Bielefeld.DE> ---
> --- Comment #1 from Ian Lance Taylor <ian at airs dot com> ---
> I'm not sure what is going on here. The test as such does not require a UTF-8
> LANG. That is, I can run the compiler and the test with LANG=C and everything
> passes. In fact, that is exactly how the GCC testsuite runs the test: the GCC
> testsuite sets LANG=C before all tests.
>
> As best I can tell the problem must be arising somehow in the DejaGNU code.
> The filenames in the test use UTF-8 non-ASCII characters. But I haven't been
> able to figure out where the problem is.
I've done a bit more digging now, running the test under runtest both
with LANG=en_US.UTF-8 and LANG=C.
* Comparing go.log shows
-PASS: go.test/test/fixedbugs/issue27836.dir/�<84>foo.go -O -I. (test for
excess errors)
+go1: fatal error: cannot open
/vol/gcc/src/hg/master/local/gcc/testsuite/go.test/test/fixedbugs/issue27836.dir/�<83>�<84>foo.go:
No such file or directory
i.e. a leading "�<83>" is added to the filename.
* Running both under truss, I see that gccgo is invoked differently:
LANG=UTF-8:
14285:
execve("/var/gcc/regression/master/11.4-gcc/build/gcc/testsuite/go-issue27836/../../gccgo",
0x00E00790, 0x009A5F10) argc = 12
14285: argv:
14285:
/var/gcc/regression/master/11.4-gcc/build/gcc/testsuite/go-issue27836/../../gccgo
14285:
-B/var/gcc/regression/master/11.4-gcc/build/gcc/testsuite/go-issue27836/../../
14285: -fdiagnostics-plain-output
14285:
-I/var/gcc/regression/master/11.4-gcc/build/i386-pc-solaris2.11/./libgo
14285: -O -I. -w -pedantic-errors -c -o Ã<84>foo.o
14285:
/vol/gcc/src/hg/master/local/gcc/testsuite/go.test/test/fixedbugs/issue27836.dir/Ã<84>foo.go
LANG=C:
14441:
execve("/var/gcc/regression/master/11.4-gcc/build/gcc/testsuite/go-issue27836/../../gccgo",
0x00DFFA40, 0x009A11A0) argc = 12
14441: argv:
14441:
/var/gcc/regression/master/11.4-gcc/build/gcc/testsuite/go-issue27836/../../gccgo
14441:
-B/var/gcc/regression/master/11.4-gcc/build/gcc/testsuite/go-issue27836/../../
14441: -fdiagnostics-plain-output
14441:
-I/var/gcc/regression/master/11.4-gcc/build/i386-pc-solaris2.11/./libgo
14441: -O -I. -w -pedantic-errors -c -o Ã<83>Â<84>foo.o
14441:
/vol/gcc/src/hg/master/local/gcc/testsuite/go.test/test/fixedbugs/issue27836.dir/Ã<83>Â<84>foo.go
So the caller of gccgo (runtest/expect) calls it differently.
runtest is the latest version:
DejaGnu version 1.6.3
Expect version 5.45.4
Tcl version 8.6
but expect is ancient (the latest available from 2018).
My inclination to debug runtest or even expect is limited, TBH.
