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Close and reopen of the PR #24958 to refresh CLA check following the CLA email. ##### Checklist - [ ] documentation is added or updated - [ ] tests are...

branch: master
approval: review pending
approval: otc review pending
triaged: bug
tests: exempted

`strdup` may return null pointer on allocation failures. I added null pointer checks to calls to `strdup` that were not checked.

This PR attempts to handle cases where a model does not repeat the function signature. Note that the variable `start` denotes the position of the queried function signature, and it...