Created attachment 1243373 [details]
Preprocessed source file

Description of problem:
Internal compiler error when attempting to build a unit test within an example C++14 project.

Version-Release number of selected component (if applicable):
6.3.1

How reproducible:
Clone the original git repository, patch the source files to eliminate the erroneous use of C99 designated initializers, generate the makefile and build everything.

Steps to Reproduce:
1. git clone --recursive https://github.com/modern-cpp-examples/match3.git
2. cd match3
3. cp ../match3.git.patch .
4. git apply match3.git.patch
4. cmake .
5. make all

Actual results:
...
[ 39%] Building CXX object test/CMakeFiles/test.unit_tests_controller_actions_generate_new.dir/unit_tests/controller/actions/generate_new.cpp.o
/tmp/match3/test/unit_tests/controller/actions/generate_new.cpp: In instantiation of ‘main()::<lambda()>::<lambda(auto:28, ...)> [with auto:28 = int]’:
/usr/include/c++/6.3.1/type_traits:2481:26:   required by substitution of ‘template<class _Fn, class ... _Args> static std::__result_of_success<decltype (declval<_Fn>()((declval<_Args>)()...)), std::__invoke_other> std::__result_of_other_impl::_S_test(int) [with _Fn = main()::<lambda()>::<lambda(auto:28, ...)>&; _Args = {int, int}]’
/usr/include/c++/6.3.1/type_traits:2492:55:   required from ‘struct std::__result_of_impl<false, false, main()::<lambda()>::<lambda(auto:28, ...)>&, int, int>’
/usr/include/c++/6.3.1/type_traits:2496:12:   required from ‘class std::result_of<main()::<lambda()>::<lambda(auto:28, ...)>&(int, int)>’
/usr/include/c++/6.3.1/functional:1913:9:   required by substitution of ‘template<class _Functor, class, class> std::function<_Res(_ArgTypes ...)>::function(_Functor) [with _Functor = main()::<lambda()>::<lambda(auto:28, ...)>; <template-parameter-1-2> = void; <template-parameter-1-3> = <missing>]’
/tmp/match3/test/unit_tests/controller/actions/generate_new.cpp:24:45:   required from here
/tmp/match3/test/unit_tests/controller/actions/generate_new.cpp:16:26: internal compiler error: in tsubst_decl, at cp/pt.c:11747
   "generate new"_test = [] {
                          ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/ccGO2i5S.out file, please attach this to your bugreport.
test/CMakeFiles/test.unit_tests_controller_actions_generate_new.dir/build.make:62: recipe for target 'test/CMakeFiles/test.unit_tests_controller_actions_generate_new.dir/unit_tests/controller/actions/generate_new.cpp.o' failed
make[2]: *** [test/CMakeFiles/test.unit_tests_controller_actions_generate_new.dir/unit_tests/controller/actions/generate_new.cpp.o] Error 1
CMakeFiles/Makefile2:396: recipe for target 'test/CMakeFiles/test.unit_tests_controller_actions_generate_new.dir/all' failed
make[1]: *** [test/CMakeFiles/test.unit_tests_controller_actions_generate_new.dir/all] Error 2
Makefile:94: recipe for target 'all' failed
make: *** [all] Error 2

Expected results:
...
[ 39%] Building CXX object test/CMakeFiles/test.unit_tests_controller_actions_generate_new.dir/unit_tests/controller/actions/generate_new.cpp.o
[ 43%] Linking CXX executable test.unit_tests_controller_actions_generate_new
[ 43%] Built target test.unit_tests_controller_actions_generate_new
...

Additional info:
cat match3.git.patch
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 08298d4..26192ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,10 +28,10 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
+#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic-errors")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-c99-extensions")
+#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic-errors")
+#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-c99-extensions")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -include pph.hpp")
 
 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Emscripten")
diff --git a/test/unit_tests/controller/actions/destroy_matches.cpp b/test/unit_tests/controller/actions/destroy_matches.cpp
index bb99bfd..d99bdb8 100644
--- a/test/unit_tests/controller/actions/destroy_matches.cpp
+++ b/test/unit_tests/controller/actions/destroy_matches.cpp
@@ -18,7 +18,7 @@ int main() {
     constexpr auto height = 3;
 
     board b{{4, 2, 3, 3, 2, 2, 1, 2, 3},
-            config{.board_width = width, .board_height = height}};
+            config{"", 0, 0, width, height, 0, 0}};
     struct {
       std::vector<board::color_t> matches;
     } event{{1, 4, 7}};
diff --git a/test/unit_tests/controller/actions/find_matches.cpp b/test/unit_tests/controller/actions/find_matches.cpp
index 17f94fc..42d78c5 100644
--- a/test/unit_tests/controller/actions/find_matches.cpp
+++ b/test/unit_tests/controller/actions/find_matches.cpp
@@ -13,7 +13,7 @@
 int main() {
   using namespace match3;
   "find matches empty"_test = [] {
-    board b{{1, 2, 3, 4}, config{.board_width = 2}};
+    board b{{1, 2, 3, 4}, config{"", 0, 0, 2, 0, 0, 0}};
     selected s = {0, 1};
     struct {
       int arity;
@@ -27,7 +27,7 @@ int main() {
   };
 
   "find matches"_test = [] {
-    board b{{1, 2, 3, 1, 3, 2, 1, 2, 3}, config{.board_width = 3}};
+    board b{{1, 2, 3, 1, 3, 2, 1, 2, 3}, config{"", 0, 0, 3, 0, 0, 0}};
     selected s = {0};
     struct {
       int arity;
@@ -41,7 +41,7 @@ int main() {
   };
 
   "find matches more"_test = [] {
-    board b{{1, 2, 3, 1, 1, 1, 1, 2, 3}, config{.board_width = 3}};
+    board b{{1, 2, 3, 1, 1, 1, 1, 2, 3}, config{"", 0, 0, 3, 0, 0, 0}};
     selected s = {1, 3};
     struct {
       int arity;
diff --git a/test/unit_tests/controller/actions/generate_new.cpp b/test/unit_tests/controller/actions/generate_new.cpp
index 980b07c..624ea52 100644
--- a/test/unit_tests/controller/actions/generate_new.cpp
+++ b/test/unit_tests/controller/actions/generate_new.cpp
@@ -18,9 +18,9 @@ int main() {
     constexpr auto width = 3;
     constexpr auto height = 3;
     board b{{4, 0, 3, 3, 0, 2, 1, 0, 3},
-            config{.board_width = width, .board_height = height}};
+            config{"", 0, 0, width, height, 0, 0}};
     selected s = {0, 5};
-    generate_new(b, s, config{.board_width = width, .board_height = height},
+    generate_new(b, s, config{"", 0, 0, width, height, 0, 0},
                  [](auto...) { return NEW; });
 
     expect(equal<width * height>({4, NEW, 3, 3, NEW, 2, 1, NEW, 3}, b));