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Description
Crash report
Access violation occurs when usingpdb in the following procedure:
- step in a function
- step next a few lines inside
printfunction - before exiting
printfunction, jump to the beginning of the code - continue
Code Example [test_pdb.py] (click to expand)
__author__="pi"__version__="3.14"defabout():"""About"""print(f"Module:{__file__!r}",f"Author:{__author__!r}",f"Version:{__version__!r}",sep='\n')breakpoint()about()
Error messages
$ python -Wd -Xdev -Xtracemalloc test_pdb.py
> test_pdb.py(12)<module>()-> about()(Pdb) s--Call--> test_pdb.py(4)about()-> def about():(Pdb) n> test_pdb.py(6)about()-> print(f"Module: {__file__!r}",(Pdb) n> test_pdb.py(7)about()-> f"Author: {__author__!r}",(Pdb) j 4> test_pdb.py(4)about()-> def about():(Pdb) cModule: 'test_pdb.py'Author: 'pi'Version: '3.14'Debug memory block at address p=0000021D17AD8CF0: API 'o' 432 bytes originally requested The 7 pad bytes at p-7 are FORBIDDENBYTE, as expected. The 8 pad bytes at tail=0000021D17AD8EA0 are not all FORBIDDENBYTE (0xfd): at tail+0: 0x90 *** OUCH at tail+1: 0x46 *** OUCH at tail+2: 0x05 *** OUCH at tail+3: 0x17 *** OUCH at tail+4: 0x1d *** OUCH at tail+5: 0x02 *** OUCH at tail+6: 0x00 *** OUCH at tail+7: 0x00 *** OUCH Data at p: 00 00 00 00 00 00 00 00 ... f0 b4 b5 16 1d 02 00 00Memory block allocated at (most recent call first): File "test_pdb.py", line 12Fatal Python error: _PyMem_DebugRawFree: bad trailing pad bytePython runtime state: finalizing (tstate=0000021D169BEA10)Current thread 0x000033f0 (most recent call first):<no Python frame>Your environment
- CPython versions tested on: 3.10.4
- Operating system and architecture: Windows10 64bit
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