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authorSverker Eriksson <[email protected]>2012-02-20 19:52:13 +0100
committerSverker Eriksson <[email protected]>2012-02-21 12:10:40 +0100
commit75b831aa879234db6d8821a32f4c411ef6cfc6ff (patch)
tree96018e44b4915f152484a6f6a770f0c064c07fc4 /erts/emulator/beam/hash.c
parent520ddbc83ec87bcec262680bd915184182e3998e (diff)
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erts: Fix bignum-bug in ETS with compressed option
A large 64-bit immediate number will be stored as SMALL_BIG_EXT by ETS compressed format. When uncompressing, the SMALL_BIG_EXT was first decoded as as bignum (by bytes_to_big) and then turned into a small (by big_norm). This works for normal "binary_to_term" as decoded_size() over-estimates the needed heap size. But for ETS no over-estimation is done as the real term size is known and stored in DbTerm. Fixed by preventing bytes_to_big() from writing bignum digit when the number is seen to fit in an immediate.
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