From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/25549] Systemtap unable to find many probe points available in code compiled with LTO enable
Date: Thu, 07 May 2020 11:36:28 +0000 [thread overview]
Message-ID: <bug-25549-6586-AVwgnwK1bX@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-25549-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=25549
--- Comment #7 from Mark Wielaard <mark at klomp dot org> ---
Thanks, I can replicate it with those binaries. And the problem is precisely
where you thought it was. This is a cross-CU abstract_origin reference and
dwarf_decl_file was using the line table of the original DIE, not of the
abstract DIE (attribute) that was eventually resolved.
The following elfutils patch fixes it:
diff --git a/libdw/dwarf_decl_file.c b/libdw/dwarf_decl_file.c
index 5657132f..d4aa0a18 100644
--- a/libdw/dwarf_decl_file.c
+++ b/libdw/dwarf_decl_file.c
@@ -55,7 +55,7 @@ dwarf_decl_file (Dwarf_Die *die)
}
/* Get the array of source files for the CU. */
- struct Dwarf_CU *cu = die->cu;
+ struct Dwarf_CU *cu = attr_mem.cu;
if (cu->lines == NULL)
{
Dwarf_Lines *lines;
I'll audit the other code that uses dwarf_attr_integrate, to see if this is a
more common mistake.
--
You are receiving this mail because:
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next prev parent reply other threads:[~2020-05-07 11:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 15:40 [Bug translator/25549] New: " wcohen at redhat dot com
2020-05-01 18:31 ` [Bug translator/25549] " wcohen at redhat dot com
2020-05-04 20:18 ` wcohen at redhat dot com
2020-05-05 15:41 ` wcohen at redhat dot com
2020-05-05 20:49 ` woodard at redhat dot com
2020-05-07 2:06 ` fche at redhat dot com
2020-05-07 3:26 ` mark at klomp dot org
2020-05-07 10:27 ` fche at redhat dot com
2020-05-07 10:28 ` fche at redhat dot com
2020-05-07 11:36 ` mark at klomp dot org [this message]
2020-05-07 13:58 ` wcohen at redhat dot com
2020-05-07 17:55 ` wcohen at redhat dot com
2020-05-08 10:15 ` mark at klomp dot org
2020-05-08 14:02 ` wcohen at redhat dot com
2020-05-08 17:25 ` mark at klomp dot org
2020-05-08 20:07 ` wcohen at redhat dot com
2020-07-10 3:00 ` fche at redhat dot com
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