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Error when running mandelbrot program #525
Description
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/pixie$ pixie examples/mandelbrot.pxi
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial
steve@steve-Satellite-L555D:
[/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.
Activity
zen3d commentedon Nov 11, 2018
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 commentedon Nov 13, 2018
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 :).