CI memory safety tests
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269
sanitizers/valgrind-mcrf.supp
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269
sanitizers/valgrind-mcrf.supp
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#
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# McRogueFace Valgrind Suppression File
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#
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# Adapted from CPython's Misc/valgrind-python.supp with _PyObject_Free
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# and _PyObject_Realloc entries uncommented and updated for 64-bit.
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#
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# Usage:
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# valgrind --tool=memcheck --suppressions=sanitizers/valgrind-mcrf.supp \
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# --leak-check=full --error-exitcode=42 ./build-debug/mcrogueface ...
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#
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# NOTE: For best results, run with PYTHONMALLOC=malloc so that all Python
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# allocations go through system malloc and are fully visible to Valgrind.
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# When using PYTHONMALLOC=malloc, the pymalloc suppressions below are not
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# needed, but they're kept for cases where you want to run without it.
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#
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###############################################################################
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# CPython pymalloc internals (address_in_range)
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###############################################################################
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{
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ADDRESS_IN_RANGE/Invalid read of size 4
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Memcheck:Addr4
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fun:address_in_range
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}
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{
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ADDRESS_IN_RANGE/Invalid read of size 4
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Memcheck:Value4
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fun:address_in_range
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}
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{
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ADDRESS_IN_RANGE/Invalid read of size 8 (x86_64)
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Memcheck:Value8
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fun:address_in_range
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}
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{
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ADDRESS_IN_RANGE/Conditional jump depends on uninitialised value
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Memcheck:Cond
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fun:address_in_range
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}
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###############################################################################
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# _PyObject_Free — pymalloc's free; reads pool headers that look
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# uninitialised to Valgrind. Updated from Addr4/Value4 to Addr8/Value8
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# for 64-bit systems.
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###############################################################################
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{
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_PyObject_Free/Invalid read of size 4
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Memcheck:Addr4
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fun:_PyObject_Free
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}
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{
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_PyObject_Free/Invalid read of size 4
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Memcheck:Value4
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fun:_PyObject_Free
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}
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{
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_PyObject_Free/Use of uninitialised value of size 8
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Memcheck:Addr8
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fun:_PyObject_Free
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}
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{
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_PyObject_Free/Use of uninitialised value of size 8
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Memcheck:Value8
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fun:_PyObject_Free
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}
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{
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_PyObject_Free/Conditional jump depends on uninitialised value
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Memcheck:Cond
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fun:_PyObject_Free
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}
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###############################################################################
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# _PyObject_Realloc — same pymalloc pool-header reads as _PyObject_Free
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###############################################################################
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{
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_PyObject_Realloc/Invalid read of size 4
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Memcheck:Addr4
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fun:_PyObject_Realloc
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}
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{
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_PyObject_Realloc/Invalid read of size 4
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Memcheck:Value4
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fun:_PyObject_Realloc
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}
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{
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_PyObject_Realloc/Use of uninitialised value of size 8
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Memcheck:Addr8
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fun:_PyObject_Realloc
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}
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{
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_PyObject_Realloc/Use of uninitialised value of size 8
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Memcheck:Value8
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fun:_PyObject_Realloc
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}
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{
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_PyObject_Realloc/Conditional jump depends on uninitialised value
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Memcheck:Cond
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fun:_PyObject_Realloc
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}
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###############################################################################
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# CPython intentional leaks — interned strings, type objects, small int
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# cache, and other objects that live for the entire process lifetime
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###############################################################################
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{
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Suppress leaking the GIL after a fork
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Memcheck:Leak
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fun:malloc
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fun:PyThread_allocate_lock
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fun:PyEval_ReInitThreads
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}
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{
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Suppress leaking the autoTLSkey
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Memcheck:Leak
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fun:malloc
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fun:PyThread_create_key
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fun:_PyGILState_Init
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...
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}
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{
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Handle pthread leak (possibly leaked)
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Memcheck:Leak
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fun:calloc
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fun:allocate_dtv
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fun:_dl_allocate_tls_storage
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fun:_dl_allocate_tls
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}
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{
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Handle pthread leak (possibly leaked)
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Memcheck:Leak
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fun:memalign
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fun:_dl_allocate_tls_storage
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fun:_dl_allocate_tls
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}
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###############################################################################
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# dlopen internals — these leak by design (loaded libraries stay resident)
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###############################################################################
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{
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dlopen without dlclose (strdup via cache lookup)
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Memcheck:Leak
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fun:malloc
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fun:malloc
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fun:strdup
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fun:_dl_load_cache_lookup
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}
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{
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dlopen without dlclose (strdup via map object)
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Memcheck:Leak
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fun:malloc
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fun:malloc
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fun:strdup
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fun:_dl_map_object
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}
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{
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dlopen without dlclose (new object via malloc)
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Memcheck:Leak
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fun:malloc
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fun:*
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fun:_dl_new_object
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}
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{
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dlopen without dlclose (new object via calloc)
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Memcheck:Leak
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fun:calloc
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fun:*
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fun:_dl_new_object
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}
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{
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dlopen without dlclose (check map versions)
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Memcheck:Leak
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fun:calloc
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fun:*
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fun:_dl_check_map_versions
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}
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###############################################################################
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# CPython false positives
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###############################################################################
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{
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bpo-38118: Valgrind false alarm on GCC builtin strcmp
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Memcheck:Cond
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fun:PyUnicode_Decode
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}
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{
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Uninitialised byte(s) false alarm (bpo-35561)
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Memcheck:Param
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epoll_ctl(event)
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fun:epoll_ctl
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fun:pyepoll_internal_ctl
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}
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{
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wcscmp false positive in command line parsing
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Memcheck:Addr8
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fun:wcscmp
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fun:_PyOS_GetOpt
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...
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}
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###############################################################################
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# CPython 3.14 specific — type slot lookups can read union members that
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# Valgrind thinks are uninitialised (they're valid via different union paths)
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###############################################################################
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{
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CPython type slot union reads
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Memcheck:Cond
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fun:_Py_type_getattro
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...
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}
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{
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CPython type slot union reads (value variant)
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Memcheck:Value8
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fun:_Py_type_getattro
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...
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}
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###############################################################################
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# SFML / OpenGL driver internals — graphics drivers have their own allocators
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# that produce false positives. Only suppress known-safe patterns.
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###############################################################################
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{
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Mesa/OpenGL driver init leaks
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Memcheck:Leak
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...
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obj:*/dri/*_dri.so
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}
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{
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X11 display connection leaks
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Memcheck:Leak
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...
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fun:XOpenDisplay
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}
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{
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SFML font/texture init
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Memcheck:Leak
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...
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fun:*sf*Font*
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}
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