typedef unsigned int u32; static const u32 deadfish = 0xdeadf155; static const u32 cfb_tab8_be[] = { 0x00000000,0x000000ff,0x0000ff00,0x0000ffff, 0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff, 0xff000000,0xff0000ff,0xff00ff00,0xff00ffff, 0xffff0000,0xffff00ff,0xffffff00,0xffffffff }; static const u32 cfb_tab8_le[] = { 0x00000000,0xff000000,0x00ff0000,0xffff0000, 0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00, 0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff, 0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff }; static const u32 cfb_tab16_be[] = { 0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff }; static const u32 cfb_tab16_le[] = { 0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff }; static const u32 cfb_tab32[] = { 0x00000000, 0xffffffff }; const u32 *xxx(int bpp) { const u32 *tab; if (0) return &deadfish; switch (bpp) { case 8: tab = cfb_tab8_be; break; case 16: tab = cfb_tab16_be; break; case 32: default: tab = cfb_tab32; break; } return tab; } int main(void) { const u32 *a = xxx(8); int b = a[0]; if (b != cfb_tab8_be[0]) __builtin_abort (); return 0; }