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| author | Tom Tromey <tom@tromey.com> | 2016-05-18 21:19:17 -0600 |
|---|---|---|
| committer | Tom Tromey <tom@tromey.com> | 2016-05-23 10:08:34 -0600 |
| commit | 0f6ed0e0efe2c4dcd35b0e483dc3b5da7fe4edf0 (patch) | |
| tree | 5dfc9cba90af71c05055effd27973c1b7297ccb3 /gdb/python | |
| parent | d9eca1df01c0e6f7f22566c154e63b1df9315790 (diff) | |
| download | gdb-0f6ed0e0efe2c4dcd35b0e483dc3b5da7fe4edf0.zip gdb-0f6ed0e0efe2c4dcd35b0e483dc3b5da7fe4edf0.tar.gz gdb-0f6ed0e0efe2c4dcd35b0e483dc3b5da7fe4edf0.tar.bz2 | |
Fix PR python/19438, PR python/18393 - initialize dictionaries
This fixes PR python/19438 and PR python/18393. Both bugs are about
invoking dir() on some Python object implemented by gdb, and getting a
crash.
The crash happens because the dictionary field of these objects was
not initialized. Apparently what happens is that this field can be
lazily initialized by Python when assigning to an attribute; and it
can also be handled ok when using dir() but without __dict__ defined;
but gdb defines __dict__ because this isn't supplied automatically by
Python.
The docs on this seem rather sparse, but this patch works ok.
An alternative might be to lazily create the dictionary in
gdb_py_generic_dict, but I went with this approach because it seemed
more straightforward.
Built and regtested on x86-64 Fedora 23.
2016-05-23 Tom Tromey <tom@tromey.com>
PR python/19438, PR python/18393:
* python/py-objfile.c (objfpy_initialize): Initialize self->dict.
* python/py-progspace.c (pspy_initialize): Initialize self->dict.
2016-05-23 Tom Tromey <tom@tromey.com>
PR python/19438, PR python/18393:
* gdb.python/py-progspace.exp: Add "dir" test.
* gdb.python/py-objfile.exp: Add "dir" test.
Diffstat (limited to 'gdb/python')
| -rw-r--r-- | gdb/python/py-objfile.c | 5 | ||||
| -rw-r--r-- | gdb/python/py-progspace.c | 5 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gdb/python/py-objfile.c b/gdb/python/py-objfile.c index cd26c5b..82df4b2 100644 --- a/gdb/python/py-objfile.c +++ b/gdb/python/py-objfile.c @@ -196,7 +196,10 @@ static int objfpy_initialize (objfile_object *self) { self->objfile = NULL; - self->dict = NULL; + + self->dict = PyDict_New (); + if (self->dict == NULL) + return 0; self->printers = PyList_New (0); if (self->printers == NULL) diff --git a/gdb/python/py-progspace.c b/gdb/python/py-progspace.c index e1258c7..6fc53cb 100644 --- a/gdb/python/py-progspace.c +++ b/gdb/python/py-progspace.c @@ -97,7 +97,10 @@ static int pspy_initialize (pspace_object *self) { self->pspace = NULL; - self->dict = NULL; + + self->dict = PyDict_New (); + if (self->dict == NULL) + return 0; self->printers = PyList_New (0); if (self->printers == NULL) |