spectrometerHBH edited a comment on pull request #5483:
URL: https://github.com/apache/incubator-tvm/pull/5483#issuecomment-626096064
I found the problem. It is due to the different behavior of gcc5.4 and gcc7.4
```c++
doc << "(" << Print(op->a) << OpString << Print(op->b) << ")";
```
gcc5.4 will execute Print(op->b) first.
gcc7.4 will execute Print(op->a) first.
I have no idea why gcc5.4 will do so since `<<` should be left associative.
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