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kmsdrm: Fix busy-loop within libc's dlopen()

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For some obscure reason, the order in which the libdrm/libgbm libraries
are loaded matters.

Without this fix, the first call to check_modesetting() will work and
load then unload all symbols properly, but the second call to this
function will lock up as soon as dlopen() is called on libdrm.

Swapping the order in which the libdrm and libgbm libraries are loaded
is enough to fix (or work around?) this issue.

Fixes #4891:
https://bugzilla.libsdl.org/show_bug.cgi?id=4891

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
This commit is contained in:
Paul Cercueil 2019-12-19 21:47:43 -08:00
parent 6b76787209
commit 95d40e8a28
1 changed files with 2 additions and 2 deletions
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4
src/video/kmsdrm/SDL_kmsdrmdyn.c
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@ -50,8 +50,8 @@ typedef struct
#endif #endif
static kmsdrmdynlib kmsdrmlibs[] = { static kmsdrmdynlib kmsdrmlibs[] = {
{NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC}, {NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM},
{NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM} {NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC}
}; };
static void * static void *