Backport fix for SF808594: leak on lambda with duplicate arguments.

diff --git a/Python/compile.c b/Python/compile.c
index 9ac0032bab2829fc3b659360023a6092461a086e..f2e04b00c1b004ef08aea25f80174416d735450b 100644 (file)
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -4769,6 +4769,16 @@ symtable_update_flags(struct compiling *c, PySymtableEntryObject *ste,
        return 0;
 }
 
+static int
+symtable_error(struct symtable *st, int lineno)
+{
+       if (lineno == 0)
+               lineno = st->st_cur->ste_lineno;
+       PyErr_SyntaxLocation(st->st_filename, lineno);
+       st->st_errors++;
+       return -1;
+}
+
 static int
 symtable_load_symbols(struct compiling *c)
 {
@@ -4827,9 +4837,7 @@ symtable_load_symbols(struct compiling *c)
                        if (flags & DEF_PARAM) {
                                PyErr_Format(PyExc_SyntaxError, LOCAL_GLOBAL,
                                             PyString_AS_STRING(name));
-                               PyErr_SyntaxLocation(st->st_filename, 
-                                                  ste->ste_lineno);
-                               st->st_errors++;
+                               symtable_error(st, 0);
                                goto fail;
                        }
                        if (PyDict_SetItem(c->c_globals, name, Py_None) < 0)
@@ -5182,9 +5190,7 @@ symtable_add_def_o(struct symtable *st, PyObject *dict,
            if ((flag & DEF_PARAM) && (val & DEF_PARAM)) {
                    PyErr_Format(PyExc_SyntaxError, DUPLICATE_ARGUMENT,
                                 PyString_AsString(name));
-                   PyErr_SyntaxLocation(st->st_filename,
-                                      st->st_cur->ste_lineno);
-                   return -1;
+                   return symtable_error(st, 0);
            }
            val |= flag;
        } else
@@ -5581,9 +5587,7 @@ symtable_global(struct symtable *st, node *n)
                                PyErr_Format(PyExc_SyntaxError,
                                     "name '%.400s' is local and global",
                                             name);
-                               PyErr_SyntaxLocation(st->st_filename,
-                                                  st->st_cur->ste_lineno);
-                               st->st_errors++;
+                               symtable_error(st, 0);
                                return;
                        }
                        else {
@@ -5643,9 +5647,7 @@ symtable_import(struct symtable *st, node *n)
                        if (n->n_lineno >= st->st_future->ff_last_lineno) {
                                PyErr_SetString(PyExc_SyntaxError,
                                                LATE_FUTURE);
-                               PyErr_SyntaxLocation(st->st_filename,
-                                                  n->n_lineno);
-                               st->st_errors++;
+                               symtable_error(st, n->n_lineno);
                                return;
                        }
                }
@@ -5739,9 +5741,8 @@ symtable_assign(struct symtable *st, node *n, int def_flag)
                        if (strcmp(STR(tmp), "__debug__") == 0) {
                                PyErr_SetString(PyExc_SyntaxError, 
                                                ASSIGN_DEBUG);
-                               PyErr_SyntaxLocation(st->st_filename,
-                                                    n->n_lineno);
-                               st->st_errors++;
+                               symtable_error(st, n->n_lineno);
+                               return;
                        }
                        symtable_add_def(st, STR(tmp), DEF_LOCAL | def_flag);
                }