sdcc/support/regression/tests/bug3502965.c

   1 /*
   2    bug3502965.c
   3 */
   4
   5 #include <testfwk.h>
   6
   7 #if !defined(__SDCC_mcs51) && !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15) // Lack of memory
   8 #pragma disable_warning 85
   9
  10 #define UCHAR   unsigned char
  11 #define USHORT  unsigned short
  12 #define PCHAR   unsigned char *
  13 #define HW_ALEN                                 6
  14 #define IP_ALEN                                 4
  15
  16 typedef struct _PACKET_LIST PACKET_LIST;
  17 struct _PACKET_LIST
  18 {
  19         PACKET_LIST *   next;
  20         USHORT                  sLen;
  21         USHORT                  sAddr;
  22         UCHAR                   pRecvIP[IP_ALEN];
  23 };
  24
  25 void memcpy4(PCHAR dst) {}
  26
  27 #define EP_TYPE (HW_ALEN + HW_ALEN)
  28 #define EP_DATA (EP_TYPE + 2)
  29 #define IP_DATA     20
  30 #define ETHERNET_MAX_SIZE                               1514
  31 #define IP_DATA_MAX_SIZE                        (ETHERNET_MAX_SIZE - EP_DATA - IP_DATA)
  32 UCHAR Adapter_pPacketBuf[ETHERNET_MAX_SIZE + 1 + IP_DATA_MAX_SIZE + 1];
  33 #define Adapter_pReceivePacket  (PCHAR)(Adapter_pPacketBuf + ETHERNET_MAX_SIZE + 1)
  34
  35 #define TCP_OFFSET      12
  36 PCHAR _pReceive;
  37 UCHAR _pReceiveIP[IP_ALEN];
  38 USHORT _sReceiveDataLen;
  39
  40 void TcpRun(PACKET_LIST * p)
  41 {
  42         UCHAR iHeadLen;
  43         USHORT sLen;
  44         PCHAR pRecvIP;
  45
  46         sLen = p->sLen;
  47
  48         _pReceive = Adapter_pReceivePacket;
  49
  50         memcpy4(_pReceiveIP);
  51
  52         // check if packet length is valid
  53         iHeadLen = (_pReceive[TCP_OFFSET] & 0xf0) >> 2;
  54         if (sLen < iHeadLen)
  55         {
  56                 return;
  57         }
  58         _sReceiveDataLen = sLen - iHeadLen;
  59 }
  60 #endif
  61
  62 void testBug(void)
  63 {
  64 #if !defined(__SDCC_mcs51) && !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15) // Lack of memory
  65   PACKET_LIST pl;
  66   pl.sLen = 0xff;
  67   (Adapter_pReceivePacket)[TCP_OFFSET] = 0x00;
  68   _sReceiveDataLen = 0xaa55;
  69   TcpRun(&pl);
  70   ASSERT(_sReceiveDataLen == 0xff);
  71 #endif
  72 }
  73