mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

bpo-39882: Add _Py_FatalErrorFormat() function (GH-19157)

Browse source
This commit is contained in:
Victor Stinner 2020-03-25 19:27:36 +01:00 • committed by GitHub
parent ace018ca47
commit 87d3b9db4a
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
15 changed files with 158 additions and 110 deletions
Download patch file Download diff file Expand all files Collapse all files

32
Objects/obmalloc.c
View file

@ -2361,26 +2361,22 @@ _PyMem_DebugRealloc(void *ctx, void *ptr, size_t nbytes)
static void
_PyMem_DebugCheckAddress(const char *func, char api, const void *p)
{
assert(p != NULL);
const uint8_t *q = (const uint8_t *)p;
char msgbuf[64];
const char *msg;
size_t nbytes;
const uint8_t *tail;
int i;
char id;
if (p == NULL) {
msg = "didn't expect a NULL pointer";
goto error;
}
/* Check the API id */
id = (char)q[-SST];
if (id != api) {
msg = msgbuf;
snprintf(msgbuf, sizeof(msgbuf), "bad ID: Allocated using API '%c', verified using API '%c'", id, api);
msgbuf[sizeof(msgbuf)-1] = 0;
goto error;
_PyObject_DebugDumpAddress(p);
_Py_FatalErrorFormat(func,
"bad ID: Allocated using API '%c', "
"verified using API '%c'",
id, api);
}
/* Check the stuff at the start of p first: if there's underwrite
@ -2389,8 +2385,8 @@ _PyMem_DebugCheckAddress(const char *func, char api, const void *p)
*/
for (i = SST-1; i >= 1; --i) {
if (*(q-i) != PYMEM_FORBIDDENBYTE) {
msg = "bad leading pad byte";
goto error;
_PyObject_DebugDumpAddress(p);
_Py_FatalErrorFunc(func, "bad leading pad byte");
}
}
@ -2398,16 +2394,10 @@ _PyMem_DebugCheckAddress(const char *func, char api, const void *p)
tail = q + nbytes;
for (i = 0; i < SST; ++i) {
if (tail[i] != PYMEM_FORBIDDENBYTE) {
msg = "bad trailing pad byte";
goto error;
_PyObject_DebugDumpAddress(p);
_Py_FatalErrorFunc(func, "bad trailing pad byte");
}
}
return;
error:
_PyObject_DebugDumpAddress(p);
_Py_FatalErrorFunc(func, msg);
}
/* Display info to stderr about the memory block at p. */