Hi, I'm using GNU gdb 19991004 on Linux2.2.14-5.0 (RedHat6.2 with glibc 2.1.3) I debug a process that mmap's a device PIO space (a graphic card's registers) at pMapping in process memory space An appropriate printf(*((char *)pMapping+0x3df)) returns the proper register value (non zero) Let's break immediately after and (gdb) set radix 16 (gdb) x/10bx (char *)pMapping+3df should dump at the same address but shows only zero's Is it a known behaviour or a bug? It seems I can't (gdb) set *((char *)pMapping+3d4)=3 neither -- Emmanuel Michon Ingénieur en développement logiciel REALmagic France Mobile: 0662834836 GPGkeyID: 8782772B
