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guard against out-of-bounds jump table targets

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/dev/humancontroller 2014-07-21 17:43:53 +02:00 • committed by Zack Middleton
parent 3c52f2dccc
commit 7b866ae96d
1 changed files with 2 additions and 1 deletions
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code/qcommon/vm_x86.c
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@ -1087,8 +1087,9 @@ void VM_Compile(vm_t *vm, vmHeader_t *header)
// ensure that the optimisation pass knows about all the jump // ensure that the optimisation pass knows about all the jump
// table targets // table targets
pc = -1; // a bogus value to be printed in out-of-bounds error messages
for( i = 0; i < vm->numJumpTableTargets; i++ ) { for( i = 0; i < vm->numJumpTableTargets; i++ ) {
jused[ *(int *)(vm->jumpTableTargets + ( i * sizeof( int ) ) ) ] = 1; JUSED( *(int *)(vm->jumpTableTargets + ( i * sizeof( int ) ) ) );
} }
// Start buffer with x86-VM specific procedures // Start buffer with x86-VM specific procedures