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Fix bugs in block_log - v1.7.x #7202
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…; contruct_index should leave index file empty if block log contains no blocks
arhag
approved these changes
Apr 24, 2019
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Change Description
This PR fixes two bugs in
block_log.First, it allows opening a non-empty block log that contains no blocks. This actually fixes undefined behavior that would lead to a segmentation fault when attempting to open a block log that contained no blocks.
Second, a check is added to
construct_indexto prevent an attempt to read a block when the block log is known to not contain any blocks. In this situation, instead of throwing an exception,construct_indexwill now correctly leave an empty index file.Consensus Changes
API Changes
Documentation Additions