mirror of https://github.com/acidanthera/audk.git
839f649abb
Fix the bug of terminal fifo buffer overflow with UINT8 type.
typedef struct {
UINT8 Head;
UINT8 Tail;
UINT8 Data[RAW_FIFO_MAX_NUMBER + 1];
} RAW_DATA_FIFO;
RAW_FIFO_MAX_NUMBER is 256.
the data buffer size is 257 (Index from 0 to 256), but the max value of
the index, Head or Tail (UINT8), is 255. That means the last data of the
data buffer would be always empty if we use Head/Tail to output/input the
data correctly. And because of the incorrect buffer size the FIFO full
check "((Tail + 1) % (RAW_FIFO_MAX_NUMBER + 1)) == Head" would never meet.
Signed-off-by: gechao <gechao@greatwall.com.cn>
Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
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| .. | ||
| Application | ||
| Bus | ||
| Core | ||
| Include | ||
| Library | ||
| Logo | ||
| Test | ||
| Universal | ||
| MdeModulePkg.ci.yaml | ||
| MdeModulePkg.dec | ||
| MdeModulePkg.dsc | ||
| MdeModulePkg.uni | ||
| MdeModulePkgExtra.uni | ||