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gh-120155: Fix Coverity issue in zoneinfo load_data() (#120232)

Declare the 'rv' varaible at the top of the load_data() function to
make sure that it's initialized before the first 'goto error' which
uses 'rv' (return rv).

Fix the Coverity issue:

Error: UNINIT (CWE-457):
Python-3.12.2/Modules/_zoneinfo.c:1233:5: skipped_decl: Jumping over declaration of ""rv"".
Python-3.12.2/Modules/_zoneinfo.c:1284:5: uninit_use: Using uninitialized value ""rv"".
  1282|       }
  1283|
  1284|->     return rv;
  1285|   }
  1286|
This commit is contained in:
Victor Stinner 2024-06-10 11:54:35 +02:00 committed by GitHub
parent 4829522b8d
commit b90bd3e5bb
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@ -944,6 +944,7 @@ end:
static int
load_data(zoneinfo_state *state, PyZoneInfo_ZoneInfo *self, PyObject *file_obj)
{
int rv = 0;
PyObject *data_tuple = NULL;
long *utcoff = NULL;
@ -1220,7 +1221,6 @@ load_data(zoneinfo_state *state, PyZoneInfo_ZoneInfo *self, PyObject *file_obj)
}
}
int rv = 0;
goto cleanup;
error:
// These resources only need to be freed if we have failed, if we succeed