This PR improves initialize memory template strategy to take better advantage of the more detailed information in the sanitizer report.
Rationale: The original initialize memory template was a bit naive/conservative. It only tried to repair one location --- where the error triggered --- which isn't always even in the implicated function, but rather can be buried several calls deep.
This version instead attempts patches to initialize the uninitialized memory along calls in the allocation stack for the sanitizer report.
I have "tested" it by modifying the sanitizer.txt for nginx to be a fake memsan report --- corresponding to the gpt produced report, but with stack frames referencing nginx locations. It does happily produce potential patches, at least when GPT responds.
I can't test it properly since AFAIK we don't have any memory sanitizer reports for uninitialized memory errors.
This PR improves initialize memory template strategy to take better advantage of the more detailed information in the sanitizer report.
Rationale: The original initialize memory template was a bit naive/conservative. It only tried to repair one location --- where the error triggered --- which isn't always even in the implicated function, but rather can be buried several calls deep.
This version instead attempts patches to initialize the uninitialized memory along calls in the allocation stack for the sanitizer report.
I have "tested" it by modifying the sanitizer.txt for nginx to be a fake memsan report --- corresponding to the gpt produced report, but with stack frames referencing nginx locations. It does happily produce potential patches, at least when GPT responds.
I can't test it properly since AFAIK we don't have any memory sanitizer reports for uninitialized memory errors.