Test for assert() in configure.

configure.ac

@@ -373,7 +373,7 @@ CPPFLAGS_save="${CPPFLAGS_save} -DSYS_`echo ${SYS} | sed -e 's/-.*//' | tr 'abcd
 dnl Check for system libs needed
 need_libc=false
 
-AC_CHECK_FUNCS(gettimeofday select strerror strtod strtol strtof strtoll strtoull strsep isatty vasprintf asprintf swab sigrelse getpwuid memalign posix_memalign if_nametoindex atoll getenv putenv setenv gmtime_r ctime_r localtime_r lrintf daemon scandir fork bsearch)
+AC_CHECK_FUNCS(gettimeofday select strerror strtod strtol strtof strtoll strtoull strsep isatty vasprintf asprintf swab sigrelse getpwuid memalign posix_memalign if_nametoindex atoll getenv putenv setenv gmtime_r ctime_r localtime_r lrintf daemon scandir fork bsearch assert)
 
 dnl Check for usual libc functions
 AC_CHECK_FUNCS(strdup strndup atof)

src/libvlc.c

@@ -2729,11 +2729,12 @@ char *FromLocale( const char *locale )
             vlc_iconv( libvlc.from_locale, NULL, NULL, NULL, NULL );
         }
         vlc_mutex_unlock( &libvlc.from_locale_lock );
-
+#ifdef HAVE_ASSERT
         assert (inb == 0);
         assert (*iptr == '\0');
         assert (*optr == '\0');
         assert (strlen( output ) == (size_t)(optr - output));
+#endif
         return realloc( output, optr - output + 1 );
     }
     return (char *)locale;
@@ -2776,10 +2777,12 @@ char *ToLocale( const char *utf8 )
         }
         vlc_mutex_unlock( &libvlc.to_locale_lock );
 
+#ifdef HAVE_ASSERT
         assert (inb == 0);
         assert (*iptr == '\0');
         assert (*optr == '\0');
         assert (strlen( output ) == (size_t)(optr - output));
+#endif
 	return realloc( output, optr - output + 1 );
     }
     return (char *)utf8;