Igor’s Tip of the Week #166: Dealing with “too big function”

Occasionally you may run into the following error message:

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To ensure that the decompilation speed remains acceptable and does not block IDA, especially when using batch decompilation, by default the decompiler refuses to decompile the functions over 64 kilobytes (0x10000 bytes). But here we have function which is 3x as large:

In such case you can manually increase the size to force the decompiler try decompile the function anyway. The limit can be increased temporarily or permanently. …

batch big block decompile decompiler default error function functions ida malware analysis may message run speed week