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|Reported by||Jian Zhang|
Body of first available message related to this bug follows.
The following bug has been logged on the website: Bug reference: 16188 Logged by: Jian Zhang Email address: (redacted) PostgreSQL version: 12.1 Operating system: Linux Description: We checked the code in file “rege_dfa.c” and there is one error occurring in line 481. This error is caused by the usage of pointer with NULL value. The code in this line is “d->work = &d->statesarea[nss * wordsper];” We checked the code two lines before the error occurred line and the code is “d->statesarea = (unsigned *) MALLOC((nss + WORK) * wordsper *sizeof(unsigned));”. We found the code hasn’t checked weather the process “MALLOC” is success or not which directly define the value of the “statesarea” field of pointer “d”. This “statesarea” field of pointer “d” is used later in line 481. The program should check the effectiveness of the return value of function “MALLOC” to avoid this error.
|2020-01-06 03:20:01+00||PG Bug reporting form||BUG #16188: The usage of NULL pointer in rege_dfa.c|
|2020-01-06 04:09:01+00||Tom Lane||Re: BUG #16188: The usage of NULL pointer in rege_dfa.c|