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Bug 3815

Summary: implicit-fallthrough warning - DUFFS_LOOP4 and friends
Product: SDL Reporter: Martin Gerhardy <martin.gerhardy>
Component: buildAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 2.0   
Hardware: All   
OS: All   

Description Martin Gerhardy 2017-09-10 17:56:54 UTC 
In file included from /home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit_1.c:24:0:
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit_1.c: In function ‘Blit1toNAlpha’:
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit_1.c:461:17: warning: this statement may fall through [-Wimplicit-fallthrough=]
             dst += dstbpp;
             ~~~~^~~~
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit.h:491:21: note: in definition of macro ‘DUFFS_LOOP4’
     case 0: do {    pixel_copy_increment;                               \
                     ^~~~~~~~~~~~~~~~~~~~
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit.h:492:5: note: here
     case 3:     pixel_copy_increment;                                   \
     ^
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit_1.c:452:9: note: in expansion of macro ‘DUFFS_LOOP4’
         DUFFS_LOOP4(
         ^~~~~~~~~~~
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit_1.c:461:17: warning: this statement may fall through [-Wimplicit-fallthrough=]
             dst += dstbpp;
             ~~~~^~~~
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit.h:492:17: note: in definition of macro ‘DUFFS_LOOP4’
     case 3:     pixel_copy_increment;                                   \
                 ^~~~~~~~~~~~~~~~~~~~
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit.h:493:5: note: here
     case 2:     pixel_copy_increment;                                   \
     ^
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit_1.c:452:9: note: in expansion of macro ‘DUFFS_LOOP4’
         DUFFS_LOOP4(
         ^~~~~~~~~~~
/home/mgerhardy/dev/engine/contrib/libs/sdl2/src/video/SDL_blit_1.c:461:17: warning: this statement may fall through [-Wimplicit-fallthrough=]
             dst += dstbpp;
             ~~~~^~~~
Comment 1 Sam Lantinga 2017-09-10 19:53:55 UTC 
Fixed, thanks!
https://hg.libsdl.org/SDL/rev/1d9e9c9fc5c0