ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getOperand(3));
if (!SizeCI)
return 0;
- // If a) we don't have any length information, or b) we know this will
- // fit then just lower to a plain strcpy. Otherwise we'll keep our
- // strcpy_chk call which may fail at runtime if the size is too long.
- // TODO: It might be nice to get a maximum length out of the possible
- // string lengths for varying.
if (SizeCI->isAllOnesValue()) {
Value *Ret = EmitStrCpy(CI->getOperand(1), CI->getOperand(2), B, TD);
CI->replaceAllUsesWith(Ret);
return 0;
}
- // Should be similar to strcpy.
if (Name == "__stpcpy_chk") {
+ ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getOperand(3));
+ if (!SizeCI)
+ return 0;
+ if (SizeCI->isAllOnesValue()) {
+ Value *Ret = EmitStpCpy(CI->getOperand(1), CI->getOperand(2), B, TD);
+ CI->replaceAllUsesWith(Ret);
+ CI->eraseFromParent();
+ return true;
+ }
return 0;
}