Error when running mandelbrot program

[jsgrahamus]

Installed pixie today (20170113). Runs 'run-tests.pxi' without a failure. However, aborts when trying to run the mandelbrot program.

Below is the info I thought might be relevant. PC is a 64-bit system with ~4 GB of RAM.

steve@steve-Satellite-L555D:/pixie$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial
steve@steve-Satellite-L555D:/pixie$ pixie examples/mandelbrot.pxi
[/home/steve/pixie /home/steve/pixie/lib /home/steve/pixie/include /home/steve/pixie/../lib /home/steve/pixie/../include .]
c++ -O3 -pthread -fomit-frame-pointer -Wall -Wno-unused /tmp/ffiaUQiQE/ffi.cpp -I /home/steve/pixie -I /home/steve/pixie/lib -I /home/steve/pixie/include -I /home/steve/pixie/../lib -I /home/steve/pixie/../include -I . sdl2-config --cflags -o /tmp/ffiaUQiQE/ffi.out && /tmp/ffiaUQiQE/ffi.out
/tmp/ffiaUQiQE/ffi.cpp: In function ‘int main(int, char**)’:
/tmp/ffiaUQiQE/ffi.cpp:17:50: error: no matching function for call to ‘DumpValue()’
PixieChecker::DumpValue(SDL_PIXELFORMAT_RGBA8888);
^
In file included from /tmp/ffiaUQiQE/ffi.cpp:2:0:
/home/steve/pixie/pixie/PixieChecker.hpp:432:6: note: candidate: template void PixieChecker::DumpValue(T)
void DumpValue(T t)
^
/home/steve/pixie/pixie/PixieChecker.hpp:432:6: note: template argument deduction/substitution failed:
/tmp/ffiaUQiQE/ffi.cpp: In substitution of ‘template void PixieChecker::DumpValue(T) [with T = ]’:
/tmp/ffiaUQiQE/ffi.cpp:17:50: required from here
/tmp/ffiaUQiQE/ffi.cpp:17:50: error: ‘’ is/uses anonymous type
PixieChecker::DumpValue(SDL_PIXELFORMAT_RGBA8888);
^
/tmp/ffiaUQiQE/ffi.cpp:17:50: error: trying to instantiate ‘template void PixieChecker::DumpValue(T)’
Error: in internal function load-file

in internal function load-reader

Compiling: (with-config {:library SDL2, :cxx-flags [sdl2-config --cflags], :includes [SDL.h]} (defcfn SDL_Init) (defconst SDL_INIT_VIDEO) (defconst SDL_WINDOWPOS_UNDEFINED) (defcfn SDL_CreateWindow) (defcfn SDL_CreateRenderer) (defcfn SDL_CreateTexture) (defconst SDL_PIXELFORMAT_RGBA8888) (defconst SDL_TEXTUREACCESS_STREAMING) (defcfn SDL_UpdateTexture) (defcfn SDL_RenderClear) (defcfn SDL_RenderCopy) (defconst SDL_WINDOW_SHOWN) (defcfn SDL_RenderPresent) (defcfn SDL_LockSurface))
in examples/mandelbrot.pxi at 10:1
(with-config {:library "SDL2"
^
in pixie function with-config

in /home/steve/pixie/pixie/ffi-infer.pxi at 226:10
~(run-infer config @bodies))))
^
in pixie function run-infer

in /home/steve/pixie/pixie/ffi-infer.pxi at 207:18
result (read-string (io/run-command cmd-str))
^
in internal function read-string

RuntimeException: :pixie.stdlib/EOFWhileReadingException Unexpected EOF while reading

steve@steve-Satellite-L555D:~/pixie$

---

Regarding the first error, I do find DumpValue in PixieChecker.hpp. So I haven't figured out what might be wrong.

[zen3d]

The problem appears to lie in the SDL headers. Specifically, in SDL_pixels.h, SDL_PIXELFORMAT_* are defined in an anonymous enum as such:
enum { SDL_PIXELFORMAT_UNKNOWN, ... etc ... };
If you change the enum in SDL_pixels.h to be defined as:
typedef enum { SDL_PIXELFORMAT_UNKNOWN, ... etc ... } SDL_PIXELFORMAT_ENUM;
the problem goes away and the mandelbrot example runs successfully.

I have filed a bug with the SDL team as bug #4377. It remains to be seen if and when the SDL team will address this.

[zen3d]

The current version of SDL now fixes this specific issue, but they didn't address any of the other anonymous enums in SDL_pixels.h. I'm sure we can create more failing test cases for the SDL team if we are motivated enough :).