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Fixed an issue where empty sections or zero filled sections could return 

incorrect values and also fire an assertion.

llvm-svn: 151066
This commit is contained in:
Greg Clayton 2012-02-21 17:34:25 +00:00
parent a1c987ff38
commit ee212e2cc1
1 changed files with 9 additions and 1 deletions
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10
lldb/source/Symbol/ObjectFile.cpp
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@ -393,7 +393,15 @@ ObjectFile::ReadSectionData (const Section *section, off_t section_offset, void
}
else
{
return CopyData (section->GetFileOffset() + section_offset, dst_len, dst);
const uint64_t section_file_size = section->GetFileSize();
if (section_offset < section_file_size)
{
const uint64_t section_bytes_left = section_file_size - section_offset;
uint64_t section_dst_len = dst_len;
if (section_dst_len > section_bytes_left)
section_dst_len = section_bytes_left;
return CopyData (section->GetFileOffset() + section_offset, section_dst_len, dst);
}
}
return 0;
}