[Bug analyzer/100615] New: analyzer failed to report leak in rxtxcpu's parse_cpu_list

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100615

            Bug ID: 100615
           Summary: analyzer failed to report leak in rxtxcpu's
                    parse_cpu_list
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: analyzer
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: dmalcolm at gcc dot gnu.org
  Target Milestone: ---

clang's static analyzer found this leak on an error-handling path:
  https://github.com/stackpath/rxtxcpu/pull/42
which gcc's -fanalyzer failed to report.

Looking at the code, I see that the string is passed to strsep and to strtol,
which IIRC the analyzer doesn't have special knowledge of (perhaps the analyzer
is conservatively assuming that these could free the string?)