make check fails for m4-1.4.17

[Ambrose LI]

The development version in git appears to be identical to 1.4.17.

--- -	Wed Jul 13 15:57:01 2016
+++ update-copyright.test-ex-stderr	Wed Jul 13 15:57:01 2016
@@ -1,2 +1,18 @@
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 1.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(Copyright(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Inc.)/ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 183, <> chunk 1.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 2.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\#\ (Copyright(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Inc.)/ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 183, <> chunk 2.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 3.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\
+\ \*\ (Copyright(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\ \*\ )[ \t\r\f]*)Inc.)/ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 183, <> chunk 3.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 4.
 update-copyright.test-ex.4: warning: copyright statement not found
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 5.
 update-copyright.test-ex.5: warning: copyright statement not found
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\#\ )[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 6.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 6.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\
+(Copyright(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n)[ \t\r\f]*)Inc.)/ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 183, <> chunk 6.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\G(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Inc./ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 174, <> chunk 7.
+Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\
+\#\ (Copyright(?:(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:\([cC]\)|@copyright{ <-- HERE }|&copy;))?(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)(?:(?:\d\d)?\d\d(?:,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)?|-))*((?:\d\d)?\d\d)(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Free(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Software(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Foundation,(?:[ \t\r\f]*(?:[ \t\r\f]|\n\#\ )[ \t\r\f]*)Inc.)/ at /.tmps/source.new/m4-1.4.17/build-aux/update-copyright line 183, <> chunk 7.