TotalCmd 32bit and WinRAR 7.00: problem with 4GB "Out of memory!"

[EXECUT0R]

I start using the new WinRAR 7.00 with dictionary size of 2GB and 4GB. The TotalCmd 32bit (v11.03) have problems opening (unpacking) files inside those archives: "Out of memory!" error (the 64bit version of TotalCmd works). There's a workaround because I prefer to use the 32 bit version of TotalCmd (I've a lot of old plugins configured). What's seems strange to me is that I'm not exceeding the 4GB 32bit RAM limit (same error on 2GB dictionary size). Thanks.

[Dalai]

TC ships an unrar.dll which might need to be updated for the new features to work properly.

[EXECUT0R]

I replaced the unrar.dll (inside the TotalCmd directory) with the new "unrar.dll" (also tried also the "unrar64.dll") downloaded from the rarlabs website. But the behavior is the same.

[Horst.Epp]

I start using the new WinRAR 7.00 with dictionary size of 2GB and 4GB. The TotalCmd 32bit (v11.03) have problems opening (unpacking) files inside those archives: "Out of memory!" error (the 64bit version of TotalCmd works). There's a workaround because I prefer to use the 32 bit version of TotalCmd (I've a lot of old plugins configured). What's seems strange to me is that I'm not exceeding the 4GB 32bit RAM limit (same error on 2GB dictionary size). Thanks.

You don't have 4GB Ram on an x86 application.

[EXECUT0R]

How much memory an x86 excutable can use on a 64bit OS?
For x86 executable on x64 machine it consumes by default 2GB; if "IMAGE_FILE_LARGE_ADDRESS_AWARE" is set it can use 4GB.
(MSDN)

I'll assume "TotalCmd.exe" doesn't support "IMAGE_FILE_LARGE_ADDRESS_AWARE" extension.

Thanks.

[Hacker]

EXECUT0R,

What's seems strange to me is that I'm not exceeding the 4GB 32bit RAM limit (same error on 2GB dictionary size).

Dictionary size is not equal to RAM usage. From WinRAR Help:

Compression memory requirements vary depending on the dictionary size, such as about 7x of dictionary size for 1 GB and 1.5x for 64 GB dictionary. Decompression needs slightly more memory than a single dictionary size.

Roman

[EXECUT0R]

Thanks a lot Hacker this explain very well the problem.

[Horst.Epp]

2EXECUT0R
If you install the combined 32/64 Bit TC
the x86 plugins are only one button press away.

[EXECUT0R]

Thanks Horst.Epp I'll try.

[EXECUT0R]

For those interested I've bypassed (not solved) the problem simply unchecking "Configuration > Packer > RAR > Use internal un-RAR if possible".
Naturally there are drawbacks, if you choose a file to unpack you've to wait and it's not possible use TotalCmd till the process complete.