xread/xwrite: clip MAX_IO_SIZE to SSIZE_MAX

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 97536419e6e1b817b1bf347b6fdd63df4175177c..1aa27bdbbf39bd937a6bb66a7eafeda16bb76246 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -92,6 +92,7 @@ unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
        print join("\n", @vars);
 ')
 unset XDG_CONFIG_HOME
+unset GITPERLLIB
 GIT_AUTHOR_EMAIL=author@example.com
 GIT_AUTHOR_NAME='A U Thor'
 GIT_COMMITTER_EMAIL=committer@example.com
@@ -824,6 +825,7 @@ case $(uname -s) in
        test_set_prereq MINGW
        test_set_prereq NOT_CYGWIN
        test_set_prereq SED_STRIPS_CR
+       test_set_prereq GREP_STRIPS_CR
        ;;
 *CYGWIN*)
        test_set_prereq POSIXPERM
@@ -831,6 +833,7 @@ case $(uname -s) in
        test_set_prereq NOT_MINGW
        test_set_prereq CYGWIN
        test_set_prereq SED_STRIPS_CR
+       test_set_prereq GREP_STRIPS_CR
        ;;
 *)
        test_set_prereq POSIXPERM
@@ -885,7 +888,14 @@ test_i18ngrep () {
 
 test_lazy_prereq PIPE '
        # test whether the filesystem supports FIFOs
-       rm -f testfifo && mkfifo testfifo
+       case $(uname -s) in
+       CYGWIN*)
+               false
+               ;;
+       *)
+               rm -f testfifo && mkfifo testfifo
+               ;;
+       esac
 '
 
 test_lazy_prereq SYMLINKS '