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bpo-42739: Don't use sentinels to mark end of line table. (GH-25657)

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* Add length parameter to PyLineTable_InitAddressRange and doen't use sentinel values at end of table. Makes the line number table more robust.

* Update PyCodeAddressRange to match PEP 626.
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Mark Shannon 2021-04-29 13:12:51 +01:00 • committed by GitHub
parent 53dd6c99b3
commit c76da79b37
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13 changed files with 4968 additions and 4986 deletions
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11
Include/cpython/code.h
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@ -135,12 +135,17 @@ PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno);
PyAPI_FUNC(int) PyCode_Addr2Line(PyCodeObject *, int);
/* for internal use only */
struct _opaque {
int computed_line;
char *lo_next;
char *limit;
};
typedef struct _line_offsets {
int ar_start;
int ar_end;
int ar_line;
int ar_computed_line;
char *lo_next;
struct _opaque opaque;
} PyCodeAddressRange;
/* Update *bounds to describe the first and one-past-the-last instructions in the
@ -170,7 +175,7 @@ PyAPI_FUNC(int) _PyCode_SetExtra(PyObject *code, Py_ssize_t index,
int _PyCode_InitAddressRange(PyCodeObject* co, PyCodeAddressRange *bounds);
/** Out of process API for initializing the line number table. */
void PyLineTable_InitAddressRange(char *linetable, int firstlineno, PyCodeAddressRange *range);
void PyLineTable_InitAddressRange(char *linetable, Py_ssize_t length, int firstlineno, PyCodeAddressRange *range);
/** API for traversing the line number table. */
int PyLineTable_NextAddressRange(PyCodeAddressRange *range);