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Fixed bug 3780 - GCC 7 implicit fallthrough warnings
Martin Gerhardy 2017-08-28 06:58:01 UTC SDL_blit.h, SDL_fillrect.c and SDL_stdinc.h produces a lot of the (new) gcc-7 implicit fallthrough warnings.
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@ -389,10 +389,10 @@ SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
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return;
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switch (dwords % 4)
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{
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case 0: do { *_p++ = _val;
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case 3: *_p++ = _val;
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case 2: *_p++ = _val;
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case 1: *_p++ = _val;
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case 0: do { *_p++ = _val; /* fallthrough */
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case 3: *_p++ = _val; /* fallthrough */
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case 2: *_p++ = _val; /* fallthrough */
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case 1: *_p++ = _val; /* fallthrough */
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} while ( --_n );
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}
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#endif
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@ -472,14 +472,14 @@ do { \
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#define DUFFS_LOOP8(pixel_copy_increment, width) \
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{ int n = (width+7)/8; \
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switch (width & 7) { \
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case 0: do { pixel_copy_increment; \
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case 7: pixel_copy_increment; \
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case 6: pixel_copy_increment; \
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case 5: pixel_copy_increment; \
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case 4: pixel_copy_increment; \
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case 3: pixel_copy_increment; \
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case 2: pixel_copy_increment; \
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case 1: pixel_copy_increment; \
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case 0: do { pixel_copy_increment; /* fallthrough */ \
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case 7: pixel_copy_increment; /* fallthrough */ \
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case 6: pixel_copy_increment; /* fallthrough */ \
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case 5: pixel_copy_increment; /* fallthrough */ \
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case 4: pixel_copy_increment; /* fallthrough */ \
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case 3: pixel_copy_increment; /* fallthrough */ \
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case 2: pixel_copy_increment; /* fallthrough */ \
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case 1: pixel_copy_increment; /* fallthrough */ \
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} while ( --n > 0 ); \
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} \
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}
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@ -144,13 +144,13 @@ SDL_FillRect1(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
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switch ((uintptr_t) p & 3) {
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case 1:
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*p++ = (Uint8) color;
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--n;
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--n; /* fallthrough */
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case 2:
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*p++ = (Uint8) color;
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--n;
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--n; /* fallthrough */
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case 3:
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*p++ = (Uint8) color;
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--n;
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--n; /* fallthrough */
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}
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SDL_memset4(p, color, (n >> 2));
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}
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@ -158,11 +158,11 @@ SDL_FillRect1(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
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p += (n & ~3);
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switch (n & 3) {
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case 3:
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*p++ = (Uint8) color;
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*p++ = (Uint8) color; /* fallthrough */
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case 2:
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*p++ = (Uint8) color;
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*p++ = (Uint8) color; /* fallthrough */
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case 1:
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*p++ = (Uint8) color;
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*p++ = (Uint8) color; /* fallthrough */
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}
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}
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pixels += pitch;
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