Enabling Address Sanitizer breaks GLX initialization?

Help
1

Hello, NixOS newbie here, loving it so far.

I discovered this weird thing. When adding -fsanitize=address to a build of a simple SDL + OpenGL C++ program, I get the following error from SDL when attempting to create the window:

Couldn't find matching GLX visual

If I remove -fsanitize=address from CXXFLAGS, it works perfectly.

This is happening on NixOS stable 23.05, inside nix-shell -p SDL2. Please let me know if I should provide any other details about the setup, or more detailed repro steps.

Any ideas? Should I link asan differently here?

I’m using examples/example_sdl2_opengl3 from GitHub - ocornut/imgui: Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies, with these two changes: add -fsanitize=address to CXXFLAGS in the Makefile, and log SDL_GetError() right after creating the window.

Thanks in advance,
fd

diff --git a/examples/example_sdl2_opengl3/Makefile b/examples/example_sdl2_opengl3/Makefile
index 5b4f9419..9189edf8 100644
--- a/examples/example_sdl2_opengl3/Makefile
+++ b/examples/example_sdl2_opengl3/Makefile
@@ -24,7 +24,7 @@ UNAME_S := $(shell uname -s)
 LINUX_GL_LIBS = -lGL

 CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
-CXXFLAGS += -g -Wall -Wformat
+CXXFLAGS += -g -Wall -Wformat -fsanitize=address
 LIBS =

 ##---------------------------------------------------------------------
diff --git a/examples/example_sdl2_opengl3/main.cpp b/examples/example_sdl2_opengl3/main.cpp
index 344f7452..f5ddf709 100644
--- a/examples/example_sdl2_opengl3/main.cpp
+++ b/examples/example_sdl2_opengl3/main.cpp
@@ -68,6 +68,7 @@ int main(int, char**)
     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
     SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
     SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL3 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+    printf("window: %p, error: %s\n", window, SDL_GetError());
     SDL_GLContext gl_context = SDL_GL_CreateContext(window);
     SDL_GL_MakeCurrent(window, gl_context);
     SDL_GL_SetSwapInterval(1); // Enable vsync