Remove already applied patch
Signed-off-by: David Abdurachmanov <davidlt@rivosinc.com>
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@ -1,138 +0,0 @@
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From f2c522567ad63ac293535fba9704895e685ab5bc Mon Sep 17 00:00:00 2001
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From: Mark Wielaard <mark@klomp.org>
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Date: Thu, 26 Jan 2023 18:19:15 +0100
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Subject: [PATCH] backends: Handle DW_TAG_unspecified_type in
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dwarf_peeled_die_type
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binutils 2.40 introduces DW_TAG_unspecified_type for assembly
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functions with an unknown return type. This breaks the
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run-funcretval.sh testcase because dwfl_module_return_value_location
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returns an error for such functions because it cannot determine the
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return value location. Fix that by treating DW_TAG_unspecified_type
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as if the DIE doesn't have a DW_AT_type.
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Also update the testcase to explicitly checking for
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DW_TAG_unspecified_type and printing "returns unspecified type".
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https://sourceware.org/bugzilla/show_bug.cgi?id=30047
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Signed-off-by: Mark Wielaard <mark@klomp.org>
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---
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NEWS | 5 +++++
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backends/ChangeLog | 5 +++++
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backends/libebl_CPU.h | 14 ++++++++++++--
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tests/ChangeLog | 5 +++++
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tests/funcretval.c | 14 +++++++++++++-
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5 files changed, 40 insertions(+), 3 deletions(-)
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diff --git a/NEWS b/NEWS
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index 71534b8c..80faca39 100644
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--- a/NEWS
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+++ b/NEWS
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@@ -1,3 +1,8 @@
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+Version 0.189
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+
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+libdwfl: dwfl_module_return_value_location now returns 0 (no return type)
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+ for DIEs that point to a DW_TAG_unspecified_type.
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+
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Version 0.188
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readelf: Add -D, --use-dynamic option.
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diff --git a/backends/ChangeLog b/backends/ChangeLog
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index 40ec7c0c..81f08314 100644
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--- a/backends/ChangeLog
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+++ b/backends/ChangeLog
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@@ -1,3 +1,8 @@
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+2023-02-07 Mark Wielaard <mark@klomp.org>
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+
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+ * libebl_CPU.h (dwarf_peeled_die_type): Explicitly handle
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+ DW_TAG_unspecified_type as if there was no DW_AT_type.
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+
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2023-01-19 Mark Wielaard <mark@klomp.org>
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* sparc_reloc.def (NONE): Add EXEC and DYN.
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diff --git a/backends/libebl_CPU.h b/backends/libebl_CPU.h
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index 2abad76f..3b2cc3e4 100644
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--- a/backends/libebl_CPU.h
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+++ b/backends/libebl_CPU.h
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@@ -1,5 +1,6 @@
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/* Common interface for libebl modules.
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Copyright (C) 2000, 2001, 2002, 2003, 2005, 2013, 2014 Red Hat, Inc.
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+ Copyright (C) 2023 Mark J. Wielaard <mark@klomp.org>
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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@@ -53,7 +54,9 @@ extern bool (*generic_debugscn_p) (const char *) attribute_hidden;
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dwarf_tag (_die); })
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/* Get a type die corresponding to DIE. Peel CV qualifiers off
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- it. */
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+ it. Returns zero if the DIE doesn't have a type, or the type
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+ is DW_TAG_unspecified_type. Returns -1 on error. Otherwise
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+ returns the result tag DW_AT value. */
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static inline int
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dwarf_peeled_die_type (Dwarf_Die *die, Dwarf_Die *result)
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{
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@@ -69,7 +72,14 @@ dwarf_peeled_die_type (Dwarf_Die *die, Dwarf_Die *result)
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if (dwarf_peel_type (result, result) != 0)
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return -1;
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- return DWARF_TAG_OR_RETURN (result);
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+ if (result == NULL)
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+ return -1;
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+
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+ int tag = dwarf_tag (result);
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+ if (tag == DW_TAG_unspecified_type)
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+ return 0; /* Treat an unspecified type as if there was no type. */
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+
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+ return tag;
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}
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static inline bool
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diff --git a/tests/ChangeLog b/tests/ChangeLog
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index 974a3a4f..89f1a991 100644
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--- a/tests/ChangeLog
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+++ b/tests/ChangeLog
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@@ -1,3 +1,8 @@
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+2023-02-07 Mark Wielaard <mark@klomp.org>
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+
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+ * tests/funcretval.c (handle_function): Check for
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+ DW_TAG_unspecified_type.
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+
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2023-02-03 Mark Wielaard <mark@klomp.org>
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* run-addr2line-C-test.sh: Check ELFUTILS_DISABLE_DEMANGLE.
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diff --git a/tests/funcretval.c b/tests/funcretval.c
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index 16cd1a44..41198ab7 100644
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--- a/tests/funcretval.c
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+++ b/tests/funcretval.c
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@@ -1,5 +1,6 @@
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/* Test program for dwfl_module_return_value_location.
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Copyright (C) 2005 Red Hat, Inc.
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+ Copyright (C) 2023 Mark J. Wielaard <mark@klomp.org>
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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@@ -67,7 +68,18 @@ handle_function (Dwarf_Die *funcdie, void *arg)
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error (EXIT_FAILURE, 0, "dwfl_module_return_value_location: %s",
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dwfl_errmsg (-1));
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else if (nlocops == 0)
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- puts ("returns no value");
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+ {
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+ // Check if this is the special unspecified type
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+ // https://sourceware.org/bugzilla/show_bug.cgi?id=30047
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+ Dwarf_Die die_mem, *typedie = &die_mem;
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+ Dwarf_Attribute attr_mem, *attr;
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+ attr = dwarf_attr_integrate (funcdie, DW_AT_type, &attr_mem);
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+ if (dwarf_formref_die (attr, typedie) != NULL
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+ && dwarf_tag (typedie) == DW_TAG_unspecified_type)
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+ puts ("returns unspecified type");
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+ else
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+ puts ("returns no value");
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+ }
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else
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{
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printf ("return value location:");
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--
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2.43.0
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@ -80,8 +80,6 @@ Patch2: elfutils-0.190-fix-core-noncontig.patch
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# Remove obscure tests that can fail on i386.
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# Remove obscure tests that can fail on i386.
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Patch3: elfutils-0.190-remove-ET_REL-unstrip-test.patch
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Patch3: elfutils-0.190-remove-ET_REL-unstrip-test.patch
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# Fix testsuite failure with binutils 2.40 or newer.
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Patch10: 0001-backends-Handle-DW_TAG_unspecified_type-in-dwarf_pee.patch
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%description
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%description
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Elfutils is a collection of utilities, including stack (to show
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Elfutils is a collection of utilities, including stack (to show
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