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Closes #22336: attemptckalloc() with PyMem_Malloc() in _tkinter 

The PyMem_Malloc(size) function has a well defined behaviour: if size is 0, a
pointer different than NULL is returned. PyMem_Malloc() allocations are
tracked by tracemalloc, attemptckalloc() allocations are not tracked.
This commit is contained in:
Victor Stinner 2014-09-11 17:50:21 +02:00
parent a1b16bab2f
commit ee6c3c7162
1 changed files with 12 additions and 12 deletions
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24
Modules/_tkinter.c
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@ -605,7 +605,7 @@ Tkapp_New(const char *screenName, const char *className,
Tcl_SetVar(v->interp, "tcl_interactive", "0", TCL_GLOBAL_ONLY);
/* This is used to get the application class for Tk 4.1 and up */
argv0 = (char*)attemptckalloc(strlen(className) + 1);
argv0 = (char*)PyMem_Malloc(strlen(className) + 1);
if (!argv0) {
PyErr_NoMemory();
Py_DECREF(v);
@ -616,7 +616,7 @@ Tkapp_New(const char *screenName, const char *className,
if (Py_ISUPPER(Py_CHARMASK(argv0[0])))
argv0[0] = Py_TOLOWER(Py_CHARMASK(argv0[0]));
Tcl_SetVar(v->interp, "argv0", argv0, TCL_GLOBAL_ONLY);
ckfree(argv0);
PyMem_Free(argv0);
if (! wantTk) {
Tcl_SetVar(v->interp,
@ -639,7 +639,7 @@ Tkapp_New(const char *screenName, const char *className,
if (use)
len += strlen(use) + sizeof "-use ";
args = (char*)attemptckalloc(len);
args = (char*)PyMem_Malloc(len);
if (!args) {
PyErr_NoMemory();
Py_DECREF(v);
@ -657,7 +657,7 @@ Tkapp_New(const char *screenName, const char *className,
}
Tcl_SetVar(v->interp, "argv", args, TCL_GLOBAL_ONLY);
ckfree(args);
PyMem_Free(args);
}
if (Tcl_AppInit(v->interp) != TCL_OK) {
@ -914,15 +914,15 @@ AsObj(PyObject *value)
"list is too long");
return NULL;
}
argv = (Tcl_Obj **) attemptckalloc(((size_t)size) * sizeof(Tcl_Obj *));
if(!argv) {
argv = (Tcl_Obj **) PyMem_Malloc(((size_t)size) * sizeof(Tcl_Obj *));
if (!argv) {
PyErr_NoMemory();
return NULL;
}
for (i = 0; i < size; i++)
argv[i] = AsObj(PySequence_Fast_GET_ITEM(value,i));
result = Tcl_NewListObj(size, argv);
ckfree(FREECAST argv);
PyMem_Free(argv);
return result;
}
else if (PyUnicode_Check(value)) {
@ -948,7 +948,7 @@ AsObj(PyObject *value)
if (kind == sizeof(Tcl_UniChar))
return Tcl_NewUnicodeObj(inbuf, size);
allocsize = ((size_t)size) * sizeof(Tcl_UniChar);
outbuf = (Tcl_UniChar*)attemptckalloc(allocsize);
outbuf = (Tcl_UniChar*)PyMem_Malloc(allocsize);
/* Else overflow occurred, and we take the next exit */
if (!outbuf) {
PyErr_NoMemory();
@ -965,14 +965,14 @@ AsObj(PyObject *value)
"character U+%x is above the range "
"(U+0000-U+FFFF) allowed by Tcl",
ch);
ckfree(FREECAST outbuf);
PyMem_Free(outbuf);
return NULL;
}
#endif
outbuf[i] = ch;
}
result = Tcl_NewUnicodeObj(outbuf, size);
ckfree(FREECAST outbuf);
PyMem_Free(outbuf);
return result;
}
else if(PyTclObject_Check(value)) {
@ -1084,7 +1084,7 @@ Tkapp_CallDeallocArgs(Tcl_Obj** objv, Tcl_Obj** objStore, int objc)
for (i = 0; i < objc; i++)
Tcl_DecrRefCount(objv[i]);
if (objv != objStore)
ckfree(FREECAST objv);
PyMem_Free(objv);
}
/* Convert Python objects to Tcl objects. This must happen in the
@ -1115,7 +1115,7 @@ Tkapp_CallArgs(PyObject *args, Tcl_Obj** objStore, int *pobjc)
"list is too long");
return NULL;
}
objv = (Tcl_Obj **)attemptckalloc(((size_t)objc) * sizeof(Tcl_Obj *));
objv = (Tcl_Obj **)PyMem_Malloc(((size_t)objc) * sizeof(Tcl_Obj *));
if (objv == NULL) {
PyErr_NoMemory();
objc = 0;