GCC Pragma region error: expected expression before ‘#pragma’

Question

I'm trying to fold elements in an array with #pragma region and #pragma endregion directives, but every time I compile it I get:

gcc -ffreestanding -fshort-wchar -fno-stack-protector -Wall -Wno-implicit-function-declaration -c main.c -o main.o
main.c:16:13: error: expected expression before ‘#pragma’
   16 |     #pragma region ExclamationMark
      |             ^~~~~~

Here's a minimal reproducible example:

#define FontHeight 16

typedef struct { unsigned char g[FontHeight]; } Glyph;

#define GLYPH(_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16) (Glyph){{_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16}}
#define EMPTY_GLYPH (Glyph){{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}

Glyph Font[] = {
    EMPTY_GLYPH,
    EMPTY_GLYPH,
    EMPTY_GLYPH,
    EMPTY_GLYPH,
    // and so on...
    #pragma region ExclamationMark
    GLYPH(
        0b00000000,
        0b00000000,
        0b00000000,
        0b00001000,
        0b00001000,
        0b00001000,
        0b00001000,
        0b00001000,
        0b00001000,
        0b00001000,
        0b00000000,
        0b00001000,
        0b00001000,
        0b00000000,
        0b00000000,
        0b00000000
    ),
    #pragma endregion ExclamationMark
};

The two aforementioned directives were supported in GCC v13 (I'm using GCC 13.1.1 on Arch Linux), but even so GCC throws me an error - this should at most be a warning as far as I know and my toolchain doesn't promote any warnings to errors.

The reason I want to do this is because the elements I'm trying to fold are multiple lines long, themselves simplified by using #define directives in a header file. Permalink to source file is here.

Thanks in advance.