Fixed bug #79841

Author: nikic

NEWS

@@ -7,6 +7,8 @@ PHP                                                                        NEWS
     not handled properly). (Nikita)
   . Fixed bug #79791 (Assertion failure when unsetting variable during binary
     op). (Nikita)
+  . Fixed bug #79841 (Syntax error in configure / unescaped "[]" in php.m4).
+    (Nikita)
 
 09 Jul 2020, PHP 8.0.0alpha2
 

build/php.m4

@@ -1784,7 +1784,9 @@ AC_DEFUN([PHP_PROG_BISON], [
     AC_MSG_CHECKING([for bison version])
 
     php_bison_version=$($YACC --version 2> /dev/null | grep 'GNU Bison' | cut -d ' ' -f 4 | tr -d a-z)
-    [ -z "$php_bison_version" ] && php_bison_version=0.0.0
+    if test -z "$php_bison_version"; then
+      php_bison_version=0.0.0
+    fi
     ac_IFS=$IFS; IFS="."
     set $php_bison_version
     IFS=$ac_IFS
@@ -1849,7 +1851,9 @@ AC_DEFUN([PHP_PROG_RE2C],[
     AC_MSG_CHECKING([for re2c version])
 
     php_re2c_version=$($RE2C --version | cut -d ' ' -f 2 2>/dev/null)
-    [ -z "$php_re2c_version" ] && php_re2c_version=0.0.0
+    if test -z "$php_re2c_version"; then
+      php_re2c_version=0.0.0
+    fi
     ac_IFS=$IFS; IFS="."
     set $php_re2c_version
     IFS=$ac_IFS