MzScheme 'passes' with c++11 testing now

Test c++17 on Github Actions to try keep it passing when
configure detects g++ can test c++17.

.github/workflows/ci.yml

@@ -294,6 +294,7 @@ jobs:
           GCC: 11
         # Experimental languages (these are allowed to fail)
         - SWIGLANG: mzscheme
+          CPPSTD: c++17
           continue-on-error: true
         - SWIGLANG: ocaml
           CPPSTD: c++17

Examples/test-suite/common.mk

@@ -774,6 +774,7 @@ command_line_define.ctest: SWIGOPT += -DFOO
 # Allow modules to define temporarily failing tests.
 C_TEST_CASES := $(filter-out $(FAILING_C_TESTS),$(C_TEST_CASES))
 CPP_TEST_CASES := $(filter-out $(FAILING_CPP_TESTS),$(CPP_TEST_CASES))
+CPP11_TEST_CASES := $(filter-out $(FAILING_CPP_TESTS),$(CPP11_TEST_CASES))
 MULTI_CPP_TEST_CASES := $(filter-out $(FAILING_MULTI_CPP_TESTS),$(MULTI_CPP_TEST_CASES))
 
 

Examples/test-suite/mzscheme/Makefile.in

@@ -19,6 +19,11 @@ char_strings \
 chartest \
 class_scope_weird \
 constant_pointers \
+cpp11_alternate_function_syntax \
+cpp11_director_enums \
+cpp11_ref_qualifiers \
+cpp11_rvalue_reference2 \
+cpp11_strongly_typed_enumerations \
 cpp_basic \
 cpp_enum \
 curiously_recurring_template_pattern \