Drop broken C99 support

configure.ac

@@ -43,7 +43,7 @@ AC_SUBST(vlclibdir)
 dnl
 dnl Check for tools
 dnl
-AC_PROG_CC_C99
+AC_PROG_CC
 AC_USE_SYSTEM_EXTENSIONS
 VLC_PROG_CC_C11
 AC_DEFINE([_FORTIFY_SOURCE], 2, [Define to 2 to get glibc warnings.])

include/vlc_arrays.h

@@ -261,12 +261,12 @@ static inline size_t vlc_array_count( vlc_array_t * p_array )
     return p_array->i_count;
 }
 
-#if defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
+#ifndef __cplusplus
 # define vlc_array_item_at_index(ar, idx) \
     _Generic((ar), \
         const vlc_array_t *: ((ar)->pp_elems[idx]), \
         vlc_array_t *: ((ar)->pp_elems[idx]))
-#elif defined (__cplusplus)
+#else
 static inline void *vlc_array_item_at_index( vlc_array_t *ar, size_t idx )
 {
     return ar->pp_elems[idx];

include/vlc_atomic.h

@@ -34,7 +34,7 @@
 #endif
 
 # ifndef __cplusplus
-#  if (__STDC_VERSION__ >= 201112L) && !defined (__STDC_NO_ATOMICS__)
+#  if !defined (__STDC_NO_ATOMICS__)
 /*** Native C11 atomics ***/
 #   include <stdatomic.h>
 

include/vlc_common.h

@@ -470,23 +470,12 @@ struct vlc_common_members
  * It checks if the compound type actually starts with an embedded
  * \ref vlc_object_t structure.
  */
-#if !defined(__cplusplus) && (__STDC_VERSION__ >= 201112L)
+#if !defined(__cplusplus)
 # define VLC_OBJECT(x) \
     _Generic((x)->obj, \
         struct vlc_common_members: (vlc_object_t *)(&(x)->obj), \
         const struct vlc_common_members: (const vlc_object_t *)(&(x)->obj) \
     )
-#elif defined (__GNUC__)
-# ifndef __cplusplus
-#  define VLC_OBJECT( x ) \
-    __builtin_choose_expr( \
-        __builtin_types_compatible_p(__typeof__((x)->obj), struct vlc_common_members), \
-        (vlc_object_t *)(x), (void)0)
-# else
-#  define VLC_OBJECT( x ) \
-    ((vlc_object_t *)(&((x)->obj)) \
-      + 0 * __builtin_offsetof(__typeof__(*(x)), obj.object_type))
-# endif
 #else
 # define VLC_OBJECT( x ) ((vlc_object_t *)&(x)->obj)
 #endif

modules/access/http/h2frame.h

@@ -124,11 +124,9 @@ void vlc_h2_parse_destroy(struct vlc_h2_parser *);
 
 const uint8_t *vlc_h2_frame_data_get(const struct vlc_h2_frame *f,
                                      size_t *restrict len);
-#if (__STDC_VERSION__ >= 201112L)
 #define vlc_h2_frame_data_get(f, l) \
     _Generic((f), \
         const struct vlc_h2_frame *: (vlc_h2_frame_data_get)(f, l), \
         struct vlc_h2_frame *: (uint8_t *)(vlc_h2_frame_data_get)(f, l))
-#endif
 
 /** @} */