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Restart CI for New Technology and UBSAN hunting

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Continuous Integration (via runit and runitd) is now re-enabled on win7
and win10. The `make test` command, which runs the tests on all systems
is now the fastest and most stable it's been since the project started.

UBSAN is now enabled in MODE=dbg in addition to ASAN. Many instances of
undefined behavior have been removed. Mostly things like passing a NULL
argument to memcpy(), which works fine with Cosmopolitan Libc, but that
doesn't prevents the compiler from being unhappy. There was an issue w/
GNU make where static analysis claims a sprintf() call can overflow. We
also now have nicer looking crash reports on Windows since uname should
now be supported and msys64 addr2line works reliably.
This commit is contained in:
Justine Tunney 2022-03-21 03:46:16 -07:00
parent d5ff2c3fb9
commit 5e8ae2d5bc
80 changed files with 506 additions and 249 deletions
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8
third_party/python/Objects/abstract.c vendored
View file

@ -2410,9 +2410,11 @@ _PyObject_FastCall_Prepend(PyObject *callable,
/* use borrowed references */
args2[0] = obj;
memcpy(&args2[1],
args,
(nargs - 1)* sizeof(PyObject *));
if (nargs > 1) {
memcpy(&args2[1],
args,
(nargs - 1)* sizeof(PyObject *));
}
result = _PyObject_FastCall(callable, args2, nargs);
if (args2 != small_stack) {

14
third_party/python/Objects/obmalloc.c vendored
View file

@ -97,7 +97,7 @@ static inline void *
_PyMem_RawMalloc(void *ctx, size_t size)
{
#ifdef __COSMOPOLITAN__
#ifdef __FSANITIZE_ADDRESS__
#ifdef __SANITIZE_ADDRESS__
return __asan_memalign(16, size);
#else
return dlmalloc(size);
@ -117,7 +117,7 @@ static inline void *
_PyMem_RawCalloc(void *ctx, size_t nelem, size_t elsize)
{
#ifdef __COSMOPOLITAN__
#ifdef __FSANITIZE_ADDRESS__
#ifdef __SANITIZE_ADDRESS__
return __asan_calloc(nelem, elsize);
#else
return dlcalloc(nelem, elsize);
@ -141,7 +141,7 @@ _PyMem_RawRealloc(void *ctx, void *ptr, size_t size)
if (size == 0)
size = 1;
#ifdef __COSMOPOLITAN__
#ifdef __FSANITIZE_ADDRESS__
#ifdef __SANITIZE_ADDRESS__
return __asan_realloc(ptr, size);
#else
return dlrealloc(ptr, size);
@ -155,7 +155,7 @@ static inline void
_PyMem_RawFree(void *ctx, void *ptr)
{
#ifdef __COSMOPOLITAN__
#ifdef __FSANITIZE_ADDRESS__
#ifdef __SANITIZE_ADDRESS__
__asan_free(ptr);
#else
dlfree(ptr);
@ -2029,11 +2029,13 @@ int
static void
_PyMem_DebugRawFree(void *ctx, void *p)
{
debug_alloc_api_t *api = (debug_alloc_api_t *)ctx;
uint8_t *q = (uint8_t *)p - 2*SST; /* address returned from malloc */
debug_alloc_api_t *api;
uint8_t *q;
size_t nbytes;
if (p == NULL)
return;
api = (debug_alloc_api_t *)ctx;
q = (uint8_t *)p - 2*SST; /* address returned from malloc */
_PyMem_DebugCheckAddress(api->api_id, p);
nbytes = read_size_t(q);
nbytes += 4*SST;