mirror of https://github.com/python/cpython
108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
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/* Coverity Scan model
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*
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* This is a modeling file for Coverity Scan. Modeling helps to avoid false
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* positives.
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*
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* - A model file can't import any header files.
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* - Therefore only some built-in primitives like int, char and void are
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* available but not wchar_t, NULL etc.
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* - Modeling doesn't need full structs and typedefs. Rudimentary structs
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* and similar types are sufficient.
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* - An uninitialized local pointer is not an error. It signifies that the
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* variable could be either NULL or have some data.
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*
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* Coverity Scan doesn't pick up modifications automatically. The model file
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* must be uploaded by an admin in the analysis settings of
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* http://scan.coverity.com/projects/200
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*/
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/* dummy definitions, in most cases struct fields aren't required. */
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#define NULL (void *)0
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typedef int sdigit;
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typedef long Py_ssize_t;
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typedef unsigned short wchar_t;
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typedef struct {} PyObject;
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typedef struct {} grammar;
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typedef struct {} DIR;
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typedef struct {} RFILE;
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/* Python/pythonrun.c
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* resourece leak false positive */
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void Py_FatalError(const char *msg) {
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__coverity_panic__();
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}
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/* Objects/longobject.c
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* NEGATIVE_RETURNS false positive */
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static PyObject small_ints[257 + 5];
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static PyObject *get_small_int(sdigit ival)
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{
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PyObject *p;
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if (((ival + 5) >= 0) && ((ival + 5) < 257 + 5)) {
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return &small_ints[ival + 5];
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}
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return p;
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}
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/* tainted sinks
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*
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* Coverity considers argv, environ, read() data etc as tained.
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*/
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PyObject *PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)
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{
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__coverity_tainted_data_sink__(filename);
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return NULL;
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}
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/* Python/fileutils.c */
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wchar_t *_Py_char2wchar(const char* arg, size_t *size)
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{
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wchar_t *w;
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__coverity_tainted_data_sink__(arg);
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__coverity_tainted_data_sink__(size);
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return w;
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}
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/* Parser/pgenmain.c */
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grammar *getgrammar(char *filename)
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{
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grammar *g;
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__coverity_tainted_data_sink__(filename);
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return g;
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}
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/* Python/marshal.c */
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static Py_ssize_t r_string(char *s, Py_ssize_t n, RFILE *p)
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{
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__coverity_tainted_string_argument__(s);
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return 0;
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}
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static long r_long(RFILE *p)
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{
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long l;
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unsigned char buffer[4];
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r_string((char *)buffer, 4, p);
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__coverity_tainted_string_sanitize_content__(buffer);
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l = (long)buffer;
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return l;
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}
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/* Coverity doesn't understand that fdopendir() may take ownership of fd. */
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DIR *fdopendir(int fd) {
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DIR *d;
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if (d) {
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__coverity_close__(fd);
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}
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return d;
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}
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