Issue #9566: compile.c uses Py_ssize_t instead of int to store sizes to fix
compiler warnings on Windows 64-bit. Use Py_SAFE_DOWNCAST() where the final downcast is needed. The bytecode doesn't support integer parameters larger than 32-bit yet.
This commit is contained in:
Victor Stinner
parent
1540b16ff4
commit
ad9a066050
116
Python/compile.c
116
Python/compile.c
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@ -170,7 +170,7 @@ static basicblock *compiler_new_block(struct compiler *);
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static int compiler_next_instr(struct compiler *, basicblock *);
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static int compiler_addop(struct compiler *, int);
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static int compiler_addop_o(struct compiler *, int, PyObject *, PyObject *);
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static int compiler_addop_i(struct compiler *, int, int);
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static int compiler_addop_i(struct compiler *, Py_ssize_t, Py_ssize_t);
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static int compiler_addop_j(struct compiler *, int, basicblock *, int);
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static basicblock *compiler_use_new_block(struct compiler *);
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static int compiler_error(struct compiler *, const char *);
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@ -195,7 +195,7 @@ static int inplace_binop(struct compiler *, operator_ty);
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static int expr_constant(struct compiler *, expr_ty);
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static int compiler_with(struct compiler *, stmt_ty, int);
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static int compiler_call_helper(struct compiler *c, int n,
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static int compiler_call_helper(struct compiler *c, Py_ssize_t n,
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asdl_seq *args,
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asdl_seq *keywords,
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expr_ty starargs,
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@ -388,7 +388,7 @@ list2dict(PyObject *list)
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n = PyList_Size(list);
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for (i = 0; i < n; i++) {
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v = PyLong_FromLong(i);
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v = PyLong_FromSsize_t(i);
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if (!v) {
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Py_DECREF(dict);
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return NULL;
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@ -416,7 +416,7 @@ each key.
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*/
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static PyObject *
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dictbytype(PyObject *src, int scope_type, int flag, int offset)
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dictbytype(PyObject *src, int scope_type, int flag, Py_ssize_t offset)
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{
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Py_ssize_t i = offset, scope, num_keys, key_i;
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PyObject *k, *v, *dest = PyDict_New();
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@ -450,7 +450,7 @@ dictbytype(PyObject *src, int scope_type, int flag, int offset)
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scope = (vi >> SCOPE_OFFSET) & SCOPE_MASK;
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if (scope == scope_type || vi & flag) {
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PyObject *tuple, *item = PyLong_FromLong(i);
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PyObject *tuple, *item = PyLong_FromSsize_t(i);
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if (item == NULL) {
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Py_DECREF(sorted_keys);
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Py_DECREF(dest);
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@ -635,7 +635,7 @@ compiler_enter_scope(struct compiler *c, identifier name,
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static void
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compiler_exit_scope(struct compiler *c)
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{
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int n;
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Py_ssize_t n;
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PyObject *capsule;
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c->c_nestlevel--;
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@ -1128,7 +1128,7 @@ compiler_add_o(struct compiler *c, PyObject *dict, PyObject *o)
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if (PyErr_Occurred())
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return -1;
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arg = PyDict_Size(dict);
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v = PyLong_FromLong(arg);
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v = PyLong_FromSsize_t(arg);
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if (!v) {
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Py_DECREF(t);
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return -1;
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@ -1150,7 +1150,7 @@ static int
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compiler_addop_o(struct compiler *c, int opcode, PyObject *dict,
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PyObject *o)
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{
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int arg = compiler_add_o(c, dict, o);
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Py_ssize_t arg = compiler_add_o(c, dict, o);
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if (arg < 0)
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return 0;
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return compiler_addop_i(c, opcode, arg);
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@ -1160,7 +1160,7 @@ static int
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compiler_addop_name(struct compiler *c, int opcode, PyObject *dict,
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PyObject *o)
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{
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int arg;
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Py_ssize_t arg;
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PyObject *mangled = _Py_Mangle(c->u->u_private, o);
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if (!mangled)
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return 0;
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@ -1176,15 +1176,21 @@ compiler_addop_name(struct compiler *c, int opcode, PyObject *dict,
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*/
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static int
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compiler_addop_i(struct compiler *c, int opcode, int oparg)
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compiler_addop_i(struct compiler *c, Py_ssize_t opcode, Py_ssize_t oparg)
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{
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struct instr *i;
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int off;
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/* Integer arguments are limit to 16-bit. There is an extension for 32-bit
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integer arguments. */
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assert(INT32_MIN <= opcode);
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assert(opcode <= INT32_MAX);
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off = compiler_next_instr(c, c->u->u_curblock);
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if (off < 0)
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return 0;
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i = &c->u->u_curblock->b_instr[off];
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i->i_opcode = opcode;
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i->i_opcode = Py_SAFE_DOWNCAST(opcode, Py_ssize_t, int);
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i->i_oparg = oparg;
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i->i_hasarg = 1;
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compiler_set_lineno(c, off);
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@ -1436,9 +1442,9 @@ compiler_lookup_arg(PyObject *dict, PyObject *name)
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}
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static int
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compiler_make_closure(struct compiler *c, PyCodeObject *co, int args, PyObject *qualname)
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compiler_make_closure(struct compiler *c, PyCodeObject *co, Py_ssize_t args, PyObject *qualname)
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{
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int i, free = PyCode_GetNumFree(co);
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Py_ssize_t i, free = PyCode_GetNumFree(co);
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if (qualname == NULL)
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qualname = co->co_name;
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@ -1565,7 +1571,7 @@ compiler_visit_annotations(struct compiler *c, arguments_ty args,
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*/
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static identifier return_str;
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PyObject *names;
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int len;
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Py_ssize_t len;
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names = PyList_New(0);
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if (!names)
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return -1;
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@ -1602,7 +1608,7 @@ compiler_visit_annotations(struct compiler *c, arguments_ty args,
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if (len) {
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/* convert names to a tuple and place on stack */
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PyObject *elt;
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int i;
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Py_ssize_t i;
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PyObject *s = PyTuple_New(len);
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if (!s)
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goto error;
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@ -1616,7 +1622,9 @@ compiler_visit_annotations(struct compiler *c, arguments_ty args,
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len++; /* include the just-pushed tuple */
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}
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Py_DECREF(names);
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return len;
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/* We just checked that len <= 65535, see above */
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return Py_SAFE_DOWNCAST(len, Py_ssize_t, int);
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error:
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Py_DECREF(names);
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@ -1632,7 +1640,8 @@ compiler_function(struct compiler *c, stmt_ty s)
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expr_ty returns = s->v.FunctionDef.returns;
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asdl_seq* decos = s->v.FunctionDef.decorator_list;
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stmt_ty st;
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int i, n, docstring, kw_default_count = 0, arglength;
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Py_ssize_t i, n, arglength;
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int docstring, kw_default_count = 0;
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int num_annotations;
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assert(s->kind == FunctionDef_kind);
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@ -1851,7 +1860,8 @@ compiler_lambda(struct compiler *c, expr_ty e)
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PyCodeObject *co;
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PyObject *qualname;
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static identifier name;
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int kw_default_count = 0, arglength;
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int kw_default_count = 0;
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Py_ssize_t arglength;
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arguments_ty args = e->v.Lambda.args;
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assert(e->kind == Lambda_kind);
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@ -2162,7 +2172,7 @@ static int
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compiler_try_except(struct compiler *c, stmt_ty s)
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{
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basicblock *body, *orelse, *except, *end;
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int i, n;
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Py_ssize_t i, n;
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body = compiler_new_block(c);
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except = compiler_new_block(c);
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@ -2328,7 +2338,7 @@ compiler_import(struct compiler *c, stmt_ty s)
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module names.
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XXX Perhaps change the representation to make this case simpler?
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*/
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int i, n = asdl_seq_LEN(s->v.Import.names);
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Py_ssize_t i, n = asdl_seq_LEN(s->v.Import.names);
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for (i = 0; i < n; i++) {
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alias_ty alias = (alias_ty)asdl_seq_GET(s->v.Import.names, i);
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@ -2372,7 +2382,7 @@ compiler_import(struct compiler *c, stmt_ty s)
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static int
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compiler_from_import(struct compiler *c, stmt_ty s)
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{
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int i, n = asdl_seq_LEN(s->v.ImportFrom.names);
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Py_ssize_t i, n = asdl_seq_LEN(s->v.ImportFrom.names);
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PyObject *names = PyTuple_New(n);
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PyObject *level;
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@ -2489,7 +2499,7 @@ compiler_assert(struct compiler *c, stmt_ty s)
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static int
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compiler_visit_stmt(struct compiler *c, stmt_ty s)
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{
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int i, n;
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Py_ssize_t i, n;
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/* Always assign a lineno to the next instruction for a stmt. */
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c->u->u_lineno = s->lineno;
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@ -2537,12 +2547,12 @@ compiler_visit_stmt(struct compiler *c, stmt_ty s)
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if (s->v.Raise.exc) {
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VISIT(c, expr, s->v.Raise.exc);
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n++;
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if (s->v.Raise.cause) {
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VISIT(c, expr, s->v.Raise.cause);
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n++;
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if (s->v.Raise.cause) {
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VISIT(c, expr, s->v.Raise.cause);
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n++;
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}
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}
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}
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ADDOP_I(c, RAISE_VARARGS, n);
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ADDOP_I(c, RAISE_VARARGS, (int)n);
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break;
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case Try_kind:
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return compiler_try(c, s);
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@ -2702,7 +2712,8 @@ inplace_binop(struct compiler *c, operator_ty op)
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static int
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compiler_nameop(struct compiler *c, identifier name, expr_context_ty ctx)
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{
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int op, scope, arg;
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int op, scope;
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Py_ssize_t arg;
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enum { OP_FAST, OP_GLOBAL, OP_DEREF, OP_NAME } optype;
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PyObject *dict = c->u->u_names;
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@ -2828,7 +2839,8 @@ static int
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compiler_boolop(struct compiler *c, expr_ty e)
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{
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basicblock *end;
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int jumpi, i, n;
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int jumpi;
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Py_ssize_t i, n;
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asdl_seq *s;
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assert(e->kind == BoolOp_kind);
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@ -2854,7 +2866,7 @@ compiler_boolop(struct compiler *c, expr_ty e)
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static int
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compiler_list(struct compiler *c, expr_ty e)
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{
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int n = asdl_seq_LEN(e->v.List.elts);
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Py_ssize_t n = asdl_seq_LEN(e->v.List.elts);
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if (e->v.List.ctx == Store) {
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int i, seen_star = 0;
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for (i = 0; i < n; i++) {
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@ -2887,7 +2899,7 @@ compiler_list(struct compiler *c, expr_ty e)
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static int
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compiler_tuple(struct compiler *c, expr_ty e)
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{
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int n = asdl_seq_LEN(e->v.Tuple.elts);
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Py_ssize_t n = asdl_seq_LEN(e->v.Tuple.elts);
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if (e->v.Tuple.ctx == Store) {
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int i, seen_star = 0;
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for (i = 0; i < n; i++) {
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@ -2920,7 +2932,7 @@ compiler_tuple(struct compiler *c, expr_ty e)
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static int
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compiler_compare(struct compiler *c, expr_ty e)
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{
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int i, n;
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Py_ssize_t i, n;
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basicblock *cleanup = NULL;
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/* XXX the logic can be cleaned up for 1 or multiple comparisons */
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@ -2976,11 +2988,11 @@ compiler_call(struct compiler *c, expr_ty e)
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/* shared code between compiler_call and compiler_class */
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static int
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compiler_call_helper(struct compiler *c,
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int n, /* Args already pushed */
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asdl_seq *args,
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asdl_seq *keywords,
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expr_ty starargs,
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expr_ty kwargs)
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Py_ssize_t n, /* Args already pushed */
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asdl_seq *args,
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asdl_seq *keywords,
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expr_ty starargs,
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expr_ty kwargs)
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{
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int code = 0;
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@ -3041,7 +3053,7 @@ compiler_comprehension_generator(struct compiler *c,
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comprehension_ty gen;
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basicblock *start, *anchor, *skip, *if_cleanup;
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int i, n;
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Py_ssize_t i, n;
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start = compiler_new_block(c);
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skip = compiler_new_block(c);
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@ -3380,7 +3392,7 @@ compiler_with(struct compiler *c, stmt_ty s, int pos)
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static int
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compiler_visit_expr(struct compiler *c, expr_ty e)
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{
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int i, n;
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Py_ssize_t i, n;
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/* If expr e has a different line number than the last expr/stmt,
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set a new line number for the next instruction.
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@ -3409,6 +3421,8 @@ compiler_visit_expr(struct compiler *c, expr_ty e)
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return compiler_ifexp(c, e);
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case Dict_kind:
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n = asdl_seq_LEN(e->v.Dict.values);
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/* BUILD_MAP parameter is only used to preallocate the dictionary,
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it doesn't need to be exact */
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ADDOP_I(c, BUILD_MAP, (n>0xFFFF ? 0xFFFF : n));
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for (i = 0; i < n; i++) {
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VISIT(c, expr,
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@ -3756,7 +3770,7 @@ compiler_visit_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
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case ExtSlice_kind:
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kindname = "extended slice";
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if (ctx != AugStore) {
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int i, n = asdl_seq_LEN(s->v.ExtSlice.dims);
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Py_ssize_t i, n = asdl_seq_LEN(s->v.ExtSlice.dims);
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for (i = 0; i < n; i++) {
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slice_ty sub = (slice_ty)asdl_seq_GET(
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s->v.ExtSlice.dims, i);
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@ -3934,7 +3948,7 @@ static int
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assemble_lnotab(struct assembler *a, struct instr *i)
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{
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int d_bytecode, d_lineno;
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int len;
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Py_ssize_t len;
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unsigned char *lnotab;
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d_bytecode = a->a_offset - a->a_lineno_off;
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@ -4125,7 +4139,7 @@ assemble_jump_offsets(struct assembler *a, struct compiler *c)
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}
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static PyObject *
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dict_keys_inorder(PyObject *dict, int offset)
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dict_keys_inorder(PyObject *dict, Py_ssize_t offset)
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{
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PyObject *tuple, *k, *v;
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Py_ssize_t i, pos = 0, size = PyDict_Size(dict);
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@ -4150,7 +4164,8 @@ static int
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compute_code_flags(struct compiler *c)
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{
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PySTEntryObject *ste = c->u->u_ste;
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int flags = 0, n;
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int flags = 0;
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Py_ssize_t n;
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if (ste->ste_type == FunctionBlock) {
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flags |= CO_NEWLOCALS;
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if (!ste->ste_unoptimized)
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@ -4174,9 +4189,9 @@ compute_code_flags(struct compiler *c)
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if (n == 0) {
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n = PyDict_Size(c->u->u_cellvars);
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if (n < 0)
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return -1;
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return -1;
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if (n == 0) {
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flags |= CO_NOFREE;
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flags |= CO_NOFREE;
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}
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}
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@ -4195,7 +4210,9 @@ makecode(struct compiler *c, struct assembler *a)
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PyObject *freevars = NULL;
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PyObject *cellvars = NULL;
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PyObject *bytecode = NULL;
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int nlocals, flags;
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Py_ssize_t nlocals;
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int nlocals_int;
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int flags;
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tmp = dict_keys_inorder(c->u->u_consts, 0);
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if (!tmp)
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@ -4214,7 +4231,11 @@ makecode(struct compiler *c, struct assembler *a)
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freevars = dict_keys_inorder(c->u->u_freevars, PyTuple_Size(cellvars));
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if (!freevars)
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goto error;
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nlocals = PyDict_Size(c->u->u_varnames);
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assert(nlocals < INT_MAX);
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nlocals_int = Py_SAFE_DOWNCAST(nlocals, Py_ssize_t, int);
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flags = compute_code_flags(c);
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if (flags < 0)
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goto error;
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@ -4230,7 +4251,7 @@ makecode(struct compiler *c, struct assembler *a)
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consts = tmp;
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co = PyCode_New(c->u->u_argcount, c->u->u_kwonlyargcount,
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nlocals, stackdepth(c), flags,
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nlocals_int, stackdepth(c), flags,
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bytecode, consts, names, varnames,
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freevars, cellvars,
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c->c_filename, c->u->u_name,
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@ -4349,4 +4370,3 @@ PyAST_Compile(mod_ty mod, const char *filename, PyCompilerFlags *flags,
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return PyAST_CompileEx(mod, filename, flags, -1, arena);
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}
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