This is an openjdk8u252-only bug. The push of JDK-8216354 for 8u didn't include generated-configure.sh changes:

http://hg.openjdk.java.net/jdk8u/jdk8u-dev/rev/fe8417a1ea8c

So now on jdk8u-dev I see this diff when running "bash common/autoconf/autogen.sh":

diff --git a/common/autoconf/generated-configure.sh b/common/autoconf/generated-configure.sh
--- a/common/autoconf/generated-configure.sh
+++ b/common/autoconf/generated-configure.sh
@@ -4376,7 +4376,7 @@
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1565358475
+DATE_WHEN_GENERATED=1579512479
 
 ###############################################################################
 #
@@ -51600,7 +51600,7 @@
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for UCRT DLL dir" >&5
 $as_echo_n "checking for UCRT DLL dir... " >&6; }
     if test "x$with_ucrt_dll_dir" != x; then
- if test -z "$(ls -d "$with_ucrt_dll_dir/*.dll" 2> /dev/null)"; then
+ if test -z "$(ls -d "$with_ucrt_dll_dir/"*.dll 2> /dev/null)"; then
         { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
         as_fn_error $? "Could not find any dlls in $with_ucrt_dll_dir" "$LINENO" 5

Date changes are expected, other hunk not.