avcodec/bitstream: document the double volatile

Suggested-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-06-21 14:55:32 +02:00
parent 3639343478
commit a2de7b1bd5

View File

@ -163,7 +163,7 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
int table_size, table_index, index, code_prefix, symbol, subtable_bits;
int i, j, k, n, nb, inc;
uint32_t code;
volatile VLC_TYPE (* volatile table)[2];
volatile VLC_TYPE (* volatile table)[2]; // the double volatile is needed to prevent a internal compiler error in gcc 4.2
table_size = 1 << table_nb_bits;
if (table_nb_bits > 30)