Hello glasgow-haskell-users, the attached program show up the bug in mallocForeignPtrBytes (and newPinnedByteArray#) implementation - it allocates two times more memory as requested. The bug seen both on 6.6rc and june 6.4 windows builds, namely:
http://www.haskell.org/ghc/dist/current/dist/ghc-6.5.20060901-i386-unknown-mingw32.tar.gz http://www.haskell.org/ghc/dist/stable/dist/ghc-6.4.2.20060609-i386-unknown-mingw32.tar.gz after program prints "40 mb allocated" look at Task Manager indication - it shows that two times more memory actually in use. it seems that problem is only with allocating memory buffers whose sizes are powers of 2 or very close - bug shows for bufsize = 4kb, 1mb or 4095, but not not for 4000 or 10^6 -- Best regards, Bulat mailto:[EMAIL PROTECTED]
mallocForeignPtrBytes.hs
Description: Binary data
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