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When freeing XMS memory block, return an error if block has not been 

previously allocated.
This commit is contained in:
Jukka Heinonen 2002-04-29 17:12:29 +00:00 committed by Alexandre Julliard
parent 30678c33cb
commit 6138ba089f
1 changed files with 5 additions and 1 deletions
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6
dlls/winedos/xms.c
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@ -84,7 +84,11 @@ void WINAPI XMS_Handler( CONTEXT86 *context )
break;
case 0x0a: /* Free Extended Memory Block */
TRACE("free extended memory block %04x\n",DX_reg(context));
GlobalFree16(DX_reg(context));
if(!DX_reg(context) || GlobalFree16(DX_reg(context))) {
AX_reg(context) = 0; /* failure */
BL_reg(context) = 0xa2; /* invalid handle */
} else
AX_reg(context) = 1; /* success */
break;
case 0x0b: /* Move Extended Memory Block */
{