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Re: [PATCH] libdw: dwarf_getsrclines mark highest address as end_sequence.
- From: Mark Wielaard <mjw at redhat dot com>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Wed, 27 Mar 2013 09:06:11 +0100
- Subject: Re: [PATCH] libdw: dwarf_getsrclines mark highest address as end_sequence.
On Tue, Mar 26, 2013 at 03:14:31PM -0700, Roland McGrath wrote:
> prologue_end is a quality issue, and in general it's a hard problem.
> end_sequence is a format correctness issue. They're in different categories.
Yes, agreed in theory, if there were just missing or misplaced prologue_end
markers. But in practice GCC doesn't just omit prologue_end markers it
has uses a (fragile) way to indicate prologue ends by creating duplicate
rows for the same address. Which is a format correctness issue.