[vlc-devel] [PATCH] configure: fail on casting incompatible pointers

[Steve Lhomme]

On 2019-10-02 13:02, Rémi Denis-Courmont wrote:
> Yes and last I checked, VLC includes libavutil header files.

I do include libavutil and have no problem with this compiler flag.

> Le 2 octobre 2019 13:27:38 GMT+03:00, Steve Lhomme <robux4 at ycbcr.xyz> a 
> écrit :
> 
>     On 2019-10-02 12:20, Rémi Denis-Courmont wrote:
> 
>         And VLC depends on some libraries that rely on bad casts, notably
>         libavutil (heap helpers).
> 
> 
>     This is the configure script of VLC, not the contribs. I use this flag
>     all day long on Win32 and Linux builds with no issue. That enables
>     spotting errors like the AMT one very quickly.
> 
>         Le 2 octobre 2019 13:18:30 GMT+03:00, "Rémi Denis-Courmont"
>         <remi at remlab.net> a écrit :
> 
>         Next people will add incorrect manual casts to silence the errors
>         instead of fixing them properly. Not a good idea.
> 
>         Le 2 octobre 2019 13:14:14 GMT+03:00, Romain Vimont
>         <rom1v at videolabs.io> a écrit :
>         ------------------------------------------------------------------------
>         configure.ac | 2 +-
>         1 file changed, 1 insertion(+), 1 deletion(-)
> 
>         diff --git a/configure.ac b/configure.ac
>         index 210b4ca537..2fa70daf22 100644
>         --- a/configure.ac
>         +++ b/configure.ac
>         @@ -988,7 +988,7 @@ dnl
>         AX_APPEND_COMPILE_FLAGS([-Wall -Wextra -Wsign-compare -Wundef
>         -Wpointer-arith -Wvolatile-register-var -Wformat
>         -Wformat-security -Wduplicated-branches -Wduplicated-cond],
>         [CFLAGS])
>         AX_APPEND_COMPILE_FLAGS([-Wall -Wextra -Wsign-compare -Wundef
>         -Wpointer-arith -Wvolatile-register-var -Wformat
>         -Wformat-security -Wduplicated-branches -Wduplicated-cond],
>         [CXXFLAGS])
> 
>         -AX_APPEND_COMPILE_FLAGS([-Wbad-function-cast -Wwrite-strings
>         -Wmissing-prototypes -Werror-implicit-function-declaration
>         -Winit-self -Wlogical-op -Wshadow=local
>         -Wmultistatement-macros], [CFLAGS])
>         +AX_APPEND_COMPILE_FLAGS([-Wbad-function-cast -Wwrite-strings
>         -Wmissing-prototypes -Werror-implicit-function-declaration
>         -Winit-self -Wlogical-op -Wshadow=local -Wmultistatement-macros
>         -Werror=incompatible-pointer-types], [CFLAGS])
>         AX_APPEND_COMPILE_FLAGS([-pipe], [CFLAGS])
> 
>         dnl
> 
> 
>         -- 
>         Envoyé de mon appareil Android avec Courriel K-9 Mail. Veuillez
>         excuser
>         ma brièveté.
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> -- 
> Envoyé de mon appareil Android avec Courriel K-9 Mail. Veuillez excuser 
> ma brièveté.
> 
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