Fix #653: defined() not recognizing ## token paste in its operand (GNU extension) #1557
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| Job | Run time |
|---|---|
| 45s | |
| 57s | |
| 36s | |
| 4m 33s | |
| 2m 20s | |
| 1m 1s | |
| 2m 23s | |
| 1m 1s | |
| 3m 14s | |
| 32s | |
| 37s | |
| 41s | |
| 1m 39s | |
| 20m 19s |