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-rw-r--r--src/framebuffer.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/framebuffer.h b/src/framebuffer.h
index f6b99ea..872ff78 100644
--- a/src/framebuffer.h
+++ b/src/framebuffer.h
@@ -93,7 +93,7 @@ void fb_close(framebuffer_t* restrict fb);
* @param blue The blue component from [0, 255] sRGB
* @return The colour as one 32-bit integer
*/
-uint32_t fb_colour(int red, int green, int blue);
+uint32_t fb_colour(int red, int green, int blue) __attribute__((const));
/**
* Print a filled in rectangle to a framebuffer