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Some C compilers supported it as an unofficial extension well before C99, so that could be why you didn't realise or don't remember. I think that included both
by quietbritishjim 2y ago
Some C compilers supported it as an unofficial extension well before C99, so that could be why you didn't realise or don't remember. I think that included both Visual Studio (which was really a C++ compiler that could turn off the C++ bits) and GCC with GNU extensions enabled.