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gh-111178: fix UBSan failures in Modules/_tkinter.c #129795

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Merged
encukou merged 10 commits into from
Feb 26, 2025
Merged

gh-111178: fix UBSan failures in Modules/_tkinter.c #129795

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cfced14
fix UBSan failures for `TkappObject`
picnixz Jan 25, 2025
d2b723d
fix UBSan failures for `PyTclObject`
picnixz Jan 25, 2025
8c0e55e
fix UBSan failures for `TkttObject`
picnixz Jan 25, 2025
5b6a755
Merge remote-tracking branch 'upstream/main' into fix/ubsan/tkinter-1…
picnixz Feb 7, 2025
9662528
Do Do not use `_` + capital letter in new code as it is also UB.
picnixz Feb 8, 2025
6df44b6
fix compilation
picnixz Feb 8, 2025
49fc5c6
Merge branch 'main' into fix/ubsan/tkinter-111178
encukou Feb 18, 2025
08efc4c
remove unused `TkttObject_FAST_CAST` macro
picnixz Feb 25, 2025
f5f4efc
remove redundant macros and improve `CHECK_TCL_APPARTMENT`
picnixz Feb 25, 2025
5f2287c
implement CHECK_TCL_APPARTMENT as a static inline function
picnixz Feb 25, 2025
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remove unused TkttObject_FAST_CAST macro
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@picnixz
picnixz committed Feb 25, 2025
commit 08efc4c3f260f100673d3eee174656d3b11d88d0
5 changes: 3 additions & 2 deletions Modules/_tkinter.c
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Original file line number Diff line number Diff line change
Expand Up @@ -766,6 +766,8 @@ typedef struct {
PyObject *string; /* This cannot cause cycles. */
} PyTclObject;

// TODO(picnixz): maybe assert that 'op' is really a PyTclObject (we might want
// to also add a FAST_CAST macro to bypass the check if needed).
#define PyTclObject_CAST(op) ((PyTclObject *)(op))

static PyObject *PyTclObject_Type;
Expand Down Expand Up @@ -2698,9 +2700,8 @@ typedef struct {
PyObject *func;
} TkttObject;

#define TkttObject_FAST_CAST(op) ((TkttObject *)(op))
#define TkttObject_CAST(op) \
(assert(TkttObject_Check(op)), TkttObject_FAST_CAST(op))
(assert(TkttObject_Check(op)), ((TkttObject *)(op)))

/*[clinic input]
_tkinter.tktimertoken.deletetimerhandler
Expand Down