Bug or not ?

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Creator

Joined: 28 Apr 2006
Posts: 1

Creator 28 Apr 2006, 18:33

cmp [ebx],100h ; <==== ERROR: Operand size not specified.

BUT, IF use struct:

struct q
z dd ?
ends
...

cmp [ebx+q.z],100h ; <==== OK

28 Apr 2006, 18:33

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8132
Location: Kraków, Poland

Tomasz Grysztar 28 Apr 2006, 19:05

It's not a bug, it's a feature (and try the same with "cmp [ebx+q.z],al").

28 Apr 2006, 19:05

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 28 Apr 2006, 19:08

In the first case FASM can't know if ebx points to a word or a dword. In the second case FASM knows that ebx+q.z is a dword because q.z is a defined dword.

28 Apr 2006, 19:08

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