Dominique noted on IRC that the new test show-template-tree-color.C (r248698) fails when GCC_COLORS is set in the environment.
The following patch unsets GCC_COLORS within gcc-dg.exp, fixing this issue. Successfully regrtested on x86_64-pc-linux-gnu; I also verified the fix of the failing test by hand with and without GCC_COLORS set. OK for trunk? gcc/testsuite/ChangeLog: * lib/gcc-dg.exp: Ensure GCC_COLORS is unset. --- gcc/testsuite/lib/gcc-dg.exp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/gcc/testsuite/lib/gcc-dg.exp b/gcc/testsuite/lib/gcc-dg.exp index b6865b4..e555574 100644 --- a/gcc/testsuite/lib/gcc-dg.exp +++ b/gcc/testsuite/lib/gcc-dg.exp @@ -43,6 +43,12 @@ if { [ishost "*-*-cygwin*"] } { setenv LANG C.ASCII } +# Ensure GCC_COLORS is unset, for the rare testcases that verify +# how output is colorized. +if [info exists ::env(GCC_COLORS) ] { + unsetenv GCC_COLORS +} + global GCC_UNDER_TEST if ![info exists GCC_UNDER_TEST] { set GCC_UNDER_TEST "[find_gcc]" -- 1.8.5.3