Opened 12 years ago
Last modified 12 years ago
#905 closed defect
Unreliable behavior of hash tables with symbols as keys (regression wrt 4.7.4) — at Initial Version
| Reported by: | Ivan Raikov | Owned by: | |
|---|---|---|---|
| Priority: | critical | Milestone: | 4.9.0 |
| Component: | core libraries | Version: | 4.8.x |
| Keywords: | Cc: | ||
| Estimated difficulty: |
Description
The nemo program relies heavily on performing transformations over hash tables with symbols as keys. It works fine with Chicken 4.7.4, but unfortunately there seems to have been a regression in 4.8.0rc1, which results in hash-table-exists? and hash-table-ref failing to find any of the existing keys in the table after a number of transformations have been performed. I have not been able to create a small test case yet, but I suspect the hash tables stop working after some garbage collections have been performed. This issue is not entirely new; nemo previously used the environments egg, which was also exhibiting similar unreliable behavior, so I had resorted to using strings instead of symbols as keys. Any advice on how to debug this would be appreciated.
