tree a9a2495f5a50a1a0a514420fdfceb6ab5c6e47fc
parent c984725d0035e1925371757c38fed339b409e525
author ganxiaolin <ganxiaolin@xiaomi.com> 1468812104 +0800
committer David Sehr <sehr@google.com> 1470174405 -0700

Return error directly when uncompressed length is 0

If uncompressed length is 0, in function MemMap::MapAnonymous, it will generate a MemMap instance whose base_begin is nullptr.
Then, when OpenMemory, it will create a DexFile instance.
At DexFile::DexFile constructor, header_ is asigned to 0, then header_->string_ids_off_ will cause crash.

Bug: b/28856653
Test: test-art-host-gtest-dex_file_test
Signed-off-by: ganxiaolin <ganxiaolin@xiaomi.com>
Change-Id: Id37f7629f4646cbc385ef054cb83b15be4c59b00