Man page - sdl_line(3)
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Manual
SDL_LINE
NAMEHEADER FILE
SYNOPSIS
AVAILABILITY
NAME
SDL_LINE - A macro that reports the current line number of the file being compiled.
HEADER FILE
Defined in SDL3/SDL_assert.h
SYNOPSIS
#include "SDL3/SDL.h"
#define SDL_LINE __LINE__
AVAILABILITY
This macro is available since SDL 3.2.0.