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Handle more memory allocation failures without crashing.

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This commit is contained in:
Neal Norwitz 2006-07-21 07:59:47 +00:00
parent 33722aec57
commit d12bd012a6
5 changed files with 38 additions and 8 deletions
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12
Python/symtable.c
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@ -221,8 +221,12 @@ PySymtable_Build(mod_ty mod, const char *filename, PyFutureFeatures *future)
return st;
st->st_filename = filename;
st->st_future = future;
symtable_enter_block(st, GET_IDENTIFIER(top), ModuleBlock,
(void *)mod, 0);
if (!symtable_enter_block(st, GET_IDENTIFIER(top), ModuleBlock,
(void *)mod, 0)) {
PySymtable_Free(st);
return NULL;
}
st->st_top = st->st_cur;
st->st_cur->ste_unoptimized = OPT_TOPLEVEL;
/* Any other top-level initialization? */
@ -728,6 +732,8 @@ symtable_exit_block(struct symtable *st, void *ast)
if (end >= 0) {
st->st_cur = (PySTEntryObject *)PyList_GET_ITEM(st->st_stack,
end);
if (st->st_cur == NULL)
return 0;
Py_INCREF(st->st_cur);
if (PySequence_DelItem(st->st_stack, end) < 0)
return 0;
@ -749,6 +755,8 @@ symtable_enter_block(struct symtable *st, identifier name, _Py_block_ty block,
Py_DECREF(st->st_cur);
}
st->st_cur = PySTEntry_New(st, name, block, ast, lineno);
if (st->st_cur == NULL)
return 0;
if (name == GET_IDENTIFIER(top))
st->st_global = st->st_cur->ste_symbols;
if (prev) {