Merge remote-tracking branch 'upstream/maint'

* upstream/maint:
  c++: add copy ctors for compatibility with the IAR compiler
  CI: show git status
  CI: disable ICC
  tests: pass -jN from Make to the test suite
  quotearg: avoid leaks
  maint: post-release administrivia

.prev-version

@@ -1 +1 @@
-3.4.1
+3.4.2

NEWS

@@ -40,7 +40,7 @@ GNU Bison NEWS
   The Java backend no longer emits code and data for parser tracing if the
   %define variable parse.trace is not defined.
 
-* Noteworthy changes in release 3.4.2 (2019-09-08) [stable]
+* Noteworthy changes in release 3.4.2 (2019-09-12) [stable]
 
 ** Bug fixes
 

THANKS

@@ -10,6 +10,7 @@ Albert Chin-A-Young       [email protected]
 Alexander Belopolsky      [email protected]
 Alexandre Duret-Lutz      [email protected]
 Andre da Costa Barros     [email protected]
+Andreas Damm              [email protected]
 Andreas Schwab            [email protected]
 Andrew Suffield           [email protected]
 Angelo Borsotti           [email protected]

data/skeletons/lalr1.cc

@@ -354,6 +354,10 @@ m4_define([b4_shared_declarations],
       /// Assignment, needed by push_back by some old implementations.
       /// Moves the contents of that.
       stack_symbol_type& operator= (stack_symbol_type& that);
+
+      /// Assignment, needed by push_back by other implementations.
+      /// Needed by some other old implementations.
+      stack_symbol_type& operator= (const stack_symbol_type& that);
 #endif
     };
 
@@ -657,6 +661,17 @@ m4_if(b4_prefix, [yy], [],
   }
 
 #if YY_CPLUSPLUS < 201103L
+  ]b4_parser_class[::stack_symbol_type&
+  ]b4_parser_class[::stack_symbol_type::operator= (const stack_symbol_type& that)
+  {
+    state = that.state;
+    ]b4_variant_if([b4_symbol_variant([that.type_get ()],
+                                      [value], [copy], [that.value])],
+                   [[value = that.value;]])[]b4_locations_if([
+    location = that.location;])[
+    return *this;
+  }
+
   ]b4_parser_class[::stack_symbol_type&
   ]b4_parser_class[::stack_symbol_type::operator= (stack_symbol_type& that)
   {