Enable Malloc Scribble 0x55 0xAA change it ?

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ZoGo996 OP

Created Nov ’21

Replies 2

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Following the page MallocDebug

After Enable Malloc Scribble, free buffer will be set to 0x55, malloc buffer will be set to 0xAA.

would I change 0x55 and 0xAA to another value ? e.g 0xFF ?

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Answer 1

DTS Engineer OP

Apple

Nov ’21

would I change 0x55 and 0xAA to another value?

AFAICT these values are hard coded (see SCRIBBLE_BYTE and friends in libmalloc-372.30.4/src/base.h in the Darwin open source). If you’d like to see that change, you should file an enhancement request describing your requirements.

Please post your bug number, just for the record.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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Answer 2

DTS Engineer OP

Apple

Nov ’21

I use another method to do so

The disadvantage of that approach is that it only scribbles allocations made by your code, whereas MallocScribble scribbles all allocations in your process.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0