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Fixed an issue with looking up line table entries by address where internal 

line table entries that were termination entries (ones that define the bounds
of the previous entry) could be found when looking up line table entries.
We now properly skip these termination entries and check the next entry to
try for a match.

llvm-svn: 107729
This commit is contained in:
Greg Clayton 2010-07-06 23:34:08 +00:00
parent cf781e5430
commit 364f1167cb
1 changed files with 39 additions and 11 deletions
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50
lldb/source/Symbol/LineTable.cpp
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@ -194,22 +194,50 @@ LineTable::FindLineEntryByAddress (const Address &so_addr, LineEntry& line_entry
--pos;
else if (pos->sect_offset == search_entry.sect_offset)
{
while (pos != begin_pos)
// If this is a termination entry, it should't match since
// entries with the "is_terminal_entry" member set to true
// are termination entries that define the range for the
// previous entry.
if (pos->is_terminal_entry)
{
entry_collection::const_iterator prev_pos = pos - 1;
if (prev_pos->sect_idx == search_entry.sect_idx &&
prev_pos->sect_offset == search_entry.sect_offset)
--pos;
else
break;
// The matching entry is a terminal entry, so we skip
// ahead to the next entry to see if there is another
// entry following this one whose section/offset matches.
++pos;
if (pos != end_pos)
{
if (pos->sect_offset != search_entry.sect_offset)
pos = end_pos;
}
}
if (pos != end_pos)
{
// While in the same section/offset backup to find the first
// line entry that matches the address in case there are
// multiple
while (pos != begin_pos)
{
entry_collection::const_iterator prev_pos = pos - 1;
if (prev_pos->sect_idx == search_entry.sect_idx &&
prev_pos->sect_offset == search_entry.sect_offset &&
prev_pos->is_terminal_entry == false)
--pos;
else
break;
}
}
}
}
uint32_t match_idx = std::distance (begin_pos, pos);
success = ConvertEntryAtIndexToLineEntry(match_idx, line_entry);
if (index_ptr != NULL && success)
*index_ptr = match_idx;
if (pos != end_pos)
{
uint32_t match_idx = std::distance (begin_pos, pos);
success = ConvertEntryAtIndexToLineEntry(match_idx, line_entry);
if (index_ptr != NULL && success)
*index_ptr = match_idx;
}
}
}
return success;