[PATCH 0/4] Fix some regressions caused by source highlighting patch

[Andrew Burgess <andrew dot burgess at embecosm dot com>]

I noticed that the source highlighting patch 62f29fda90cf1d introduced
a couple of regressions.  These are fixed in patches #1 and #2 of this
series.

However, the fix in patch #2 is not great.  I noticed while preparing
this patch that we currently depend on the behaviour of signed integer
overflow in some cases, so...

Patch #3 is some preparation, then patch #4 removes the signed integer
overflow, and cleans up the fix in patch #2.

--

Andrew Burgess (4):
  gdb: Fix skip of `\r` before `\n` in source output
  gdb: Handle requests to print source lines backward
  gdb: Move declarations from symtab.h to source.h
  gdb: Avoid signed integer overflow when printing source lines

 gdb/ChangeLog       | 43 ++++++++++++++++++++++++
 gdb/cli/cli-cmds.c  | 35 +++++++++----------
 gdb/source.c        | 83 ++++++++++++++++++++++++++++-----------------
 gdb/source.h        | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 gdb/symtab.h        | 24 --------------
 gdb/tui/tui-hooks.c |  1 +
 6 files changed, 208 insertions(+), 74 deletions(-)

-- 
2.14.5