avcodec/bitstream: document the double volatile

Michael Niedermayer committed 12 years ago

Commit a2de7b11 parent 36393431 file · +1 −1Browse files

Unified · Split

libavcodec/bitstream.c+1−1

@@ -163,7 +163,7 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes, · 162 unmodified lines
163	int table_size, table_index, index, code_prefix, symbol, subtable_bits;	163	int table_size, table_index, index, code_prefix, symbol, subtable_bits;
164	int i, j, k, n, nb, inc;	164	int i, j, k, n, nb, inc;
165	uint32_t code;	165	uint32_t code;
166	volatile VLC_TYPE (* volatile table)[2];	166	volatile VLC_TYPE (* volatile table)[2]; // the double volatile is needed to prevent a internal compiler error in gcc 4.2
167		167
168	table_size = 1 << table_nb_bits;	168	table_size = 1 << table_nb_bits;
169	if (table_nb_bits > 30)	169	if (table_nb_bits > 30)