From: mutazilah@nospicedham.gmail.com   
      
   Does this code look wrong?   
      
   (Generated by Open Watcom 1.6)   
      
   es:di are not pointing to something sensible.   
      
   Here is the source code:   
      
           ln2 = t - s;   
           memcpy(tempbuf, s ,ln2);   
      
           if (ln2 != 0)   
           {   
               tempbuf[ln2++] = '\\';   
           }   
      
           strcpy(tempbuf + ln2, b);   
           ln2 += strlen(b);   
           strcpy(tempbuf + ln2, ".com");   
      
   printf("checking for exists of %s\n", tempbuf);   
           if (exists(tempbuf))   
           {   
   #ifdef __32BIT__   
               strcpy(cmdt, tempbuf);   
               strcat(cmdt, " ");   
               strcat(cmdt, p);   
   #endif   
               PosExec(tempbuf, &parmblock);   
               break;   
           }   
      
           printf("tempbuf is %p, ln2 is %d, exe is %s %s %p %p\n", tempbuf, ln2,   
   ".exe", ".exe", ".exe", ".exe");   
           strcpy(tempbuf + ln2 ,".exe");   
           __brkpoint();   
      
   printf("checking for exists of %s\n", tempbuf);   
      
      
   I was alerted to the problem when tempbuf didn't change.   
      
   Here is the PDOS/86 monitor:   
      
   zap 4870:c961 0xcc   
   exit   
   stop   
   checking for exists of portinit.com   
   got a match for 192 bytes, allocated is 0   
   got a match for 192 bytes, allocated is 0   
   checking for exists of c:\dos\portinit.com   
   got a match for 192 bytes, allocated is 0   
   tempbuf is 55D1:B8F4, ln2 is 15, exe is .exe .exe 55D1:0CF4 55D1:0CF4   
   got a breakpoint   
   AX 5500 BX 55D1 CX B903 DX B8F4   
   SI 0CF8 DI 0008 DS 55D1 ES 55D1   
   BP BA04 CS 4870 IP C962 FLAGS 0246   
   SS 55D1 SP B8EC   
   module loaded at 4870:0000, entry point 4870:B2B4   
   interrupt address is 4870:C962   
   adjusting to 4870:C961   
   current module loaded at 4870:0000, entry point 4870:B2B4   
   enter a hex address or range, exit to exit, help for help   
   55d1:b8f4-55d1:b913   
   55D1:B8F4 633A5C64 6F735C70 6F727469 6E69742E  c:\dos\portinit.   
   6161:0004 636F6D00 FCAA0000 DA8A8C1D D7380CAB  com..........8..   
   55d1:0cf4-55d1:0cff   
   55D1:0CF4 2E657865 0074656D 70627566           .exe.tempbuf   
      
      
   And here is the generated code:   
      
   166B                          L$199:   
   166B    5F                        pop         di   
   166C    1F                        pop         ds   
   166D    8B BE EE FE               mov         di,word ptr -0x112[bp]   
   1671    8E 86 EC FE               mov         es,word ptr -0x114[bp]   
   1675    B9 FF FF                  mov         cx,0xffff   
   1678    33 C0                     xor         ax,ax   
   167A    F2 AE                     repne scasb   
   167C    F7 D1                     not         cx   
   167E    49                        dec         cx   
   167F    8C DE                     mov         si,ds   
   1681    01 4E FE                  add         word ptr -0x2[bp],cx   
   1684    8D 8E F0 FE               lea         cx,-0x110[bp]   
   1688    B8 C6 0C                  mov         ax,offset DGROUP:L$806   
   168B    03 4E FE                  add         cx,word ptr -0x2[bp]   
   168E    16                        push        ss   
   168F    07                        pop         es   
   1690    89 CF                     mov         di,cx   
   1692    1E                        push        ds   
   1693    57                        push        di   
   1694    96                        xchg        ax,si   
   1695    8E D8                     mov         ds,ax   
   1697                          L$200:   
   1697    8A 04                     mov         al,byte ptr [si]   
   1699    26 88 05                  mov         byte ptr es:[di],al   
   169C    3C 00                     cmp         al,0x00   
   169E    74 11                     je          L$201   
   16A0    8A 44 01                  mov         al,byte ptr 0x1[si]   
   16A3    83 C6 02                  add         si,0x0002   
   16A6    26 88 45 01               mov         byte ptr es:0x1[di],al   
   16AA    83 C7 02                  add         di,0x0002   
   16AD    3C 00                     cmp         al,0x00   
   16AF    75 E6                     jne         L$200   
   16B1                          L$201:   
   16B1    5F                        pop         di   
   16B2    1F                        pop         ds   
   16B3    16                        push        ss   
   16B4    8D 96 F0 FE               lea         dx,-0x110[bp]   
   16B8    52                        push        dx   
   16B9    1E                        push        ds   
   16BA    B8 CB 0C                  mov         ax,offset DGROUP:L$807   
   16BD    50                        push        ax   
   16BE    8C D2                     mov         dx,ss   
   16C0    9A 00 00 00 00            call        printf_   
   16C5    8D 86 F0 FE               lea         ax,-0x110[bp]   
   16C9    83 C4 08                  add         sp,0x0008   
   16CC    8C D3                     mov         bx,ss   
   16CE    E8 00 00                  call        exists_   
   16D1    85 C0                     test        ax,ax   
   16D3    74 3A                     je          L$204   
   16D5    BB 00 00                  mov         bx,offset _parmblock   
   16D8    8D 86 F0 FE               lea         ax,-0x110[bp]   
   16DC    8C D9                     mov         cx,ds   
   16DE    8C D2                     mov         dx,ss   
   16E0    9A 00 00 00 00            call        PosExec_   
   16E5                          L$202:   
   16E5    C4 5E FA                  les         bx,dword ptr -0x6[bp]   
   16E8    26 80 3F 00               cmp         byte ptr es:[bx],0x00   
   16EC    75 1E                     jne         L$203   
   16EE    FF B6 EC FE               push        word ptr -0x114[bp]   
   16F2    FF B6 EE FE               push        word ptr -0x112[bp]   
   16F6    1E                        push        ds   
   16F7    B8 29 0D                  mov         ax,offset DGROUP:L$812   
   16FA    50                        push        ax   
   16FB    9A 00 00 00 00            call        printf_   
   1700    B8 01 00                  mov         ax,0x0001   
   1703    83 C4 08                  add         sp,0x0008   
   1706    89 EC                     mov         sp,bp   
   1708    5D                        pop         bp   
   1709    5F                        pop         di   
   170A    5E                        pop         si   
   170B    C3                        ret   
   170C                          L$203:   
   170C    E9 F6 00                  jmp         L$213   
   170F                          L$204:   
   170F    1E                        push        ds   
   1710    B8 E6 0C                  mov         ax,offset DGROUP:L$808   
   1713    50                        push        ax   
   1714    1E                        push        ds   
   1715    50                        push        ax   
   1716    1E                        push        ds   
   1717    50                        push        ax   
   1718    1E                        push        ds   
   1719    50                        push        ax   
   171A    FF 76 FE                  push        word ptr -0x2[bp]   
   171D    16                        push        ss   
   171E    8D 96 F0 FE               lea         dx,-0x110[bp]   
   1722    52                        push        dx   
      
   [continued in next message]   
      
   --- SoupGate-Win32 v1.05   
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