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From Craig Silverstein: Fix up comments.

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This commit is contained in:
Ian Lance Taylor 2007-11-28 19:38:35 +00:00
parent 35a487f186
commit ef04e3921e
1 changed files with 5 additions and 5 deletions
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10
gold/dwarf_reader.cc
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@ -643,19 +643,19 @@ offset_to_iterator(const std::vector<Offset_to_lineno_entry>* offsets,
// {offset = 5793, header_num = 1, file_num = 1, line_num = 67}, // 15
// {offset = 5793, header_num = 1, file_num = 1, line_num = -1}, // 16
// {offset = 5795, header_num = 1, file_num = 1, line_num = 68}, // 17
// {offset = 5798, header_num = 1, file_num = 1, line_num = -1}, // 16
// {offset = 5798, header_num = 1, file_num = 1, line_num = -1}, // 18
// The entries with line_num == -1 mark the end of a function: the
// associated offset is one past the last instruction in the
// function. This can correspond to the beginning of the next
// function (as is true for offset 3232); alternately, there can be
// a gap between the end of one function and the start of the next
// (as is true for the rest, most notably from 3236->5764).
// (as is true for some others, most obviously from 3236->5764).
//
// Case 1: lookup_key has offset == 10. lower_bound returns
// offsets[0]. Since it's not an exact match and we're
// at the beginning of offsets, we return NULL.
// at the beginning of offsets, we return end() (invalid).
// Case 2: lookup_key has offset 10000. lower_bound returns
// offset[17] (end()). We return NULL.
// offset[19] (end()). We return end() (invalid).
// Case 3: lookup_key has offset == 3211. lower_bound matches
// offsets[0] exactly, and that's the entry we return.
// Case 4: lookup_key has offset == 3232. lower_bound returns
@ -672,7 +672,7 @@ offset_to_iterator(const std::vector<Offset_to_lineno_entry>* offsets,
// offsets[8]. Since it's not an exact match, we back
// up to offsets[7]. Since offsets[7] indicates
// end-of-function, we know lookup_key is between
// functions, so we return NULL (not a valid offset).
// functions, so we return end() (not a valid offset).
// Case 7: lookup_key has offset == 5794. lower_bound returns
// offsets[17]. Since it's not an exact match, we back
// up to offsets[15]. Note we back up to the *first*