* [Bug default/27661] New: The XML reader gives anonymous types non-empty linkage_name
@ 2021-03-29 15:10 gprocida+abigail at google dot com
2021-03-29 15:34 ` [Bug default/27661] " gprocida+abigail at google dot com
0 siblings, 1 reply; 2+ messages in thread
From: gprocida+abigail at google dot com @ 2021-03-29 15:10 UTC (permalink / raw)
To: libabigail
https://sourceware.org/bugzilla/show_bug.cgi?id=27661
Bug ID: 27661
Summary: The XML reader gives anonymous types non-empty
linkage_name
Product: libabigail
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: default
Assignee: dodji at redhat dot com
Reporter: gprocida+abigail at google dot com
CC: libabigail at sourceware dot org
Target Milestone: ---
The title of the bug is just a statement of fact. Debugging shows that the
anonymous structs etc. get linkage names like "__anonymous_struct__".
With post-processed XML (so, not necessarily trustworthy), I've managed to
trigger an assertion related to this:
Line numbers are offset due some debugging statements.
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007ffff798a537 in __GI_abort () at abort.c:79
#2 0x00007ffff798a40f in __assert_fail_base (fmt=0x7ffff7af3128 "%s%s%s:%u:
%s%sAssertion `%s' failed.\n%n", assertion=0x555555763465 "__abg_cond__",
file=0x555555763451 "../../src/abg-ir.cc", line=12554, function=<optimized
out>)
at assert.c:92
#3 0x00007ffff7999662 in __GI___assert_fail
(assertion=assertion@entry=0x555555763465 "__abg_cond__",
file=file@entry=0x555555763451 "../../src/abg-ir.cc", line=line@entry=12554,
function=function@entry=0x555555763050 "static abigail::ir::type_base_sptr
abigail::ir::type_base::get_canonical_type_for(abigail::ir::type_base_sptr)")
at assert.c:101
#4 0x00005555555e9c88 in abigail::ir::type_base::get_canonical_type_for
(t=std::shared_ptr<class abigail::ir::type_base> (use count 11, weak count 1) =
{...}) at ../../src/abg-ir.cc:12554
#5 0x00005555555f0d98 in abigail::ir::canonicalize (t=std::shared_ptr<class
abigail::ir::type_base> (use count 11, weak count 1) = {...}) at
/usr/include/c++/10/bits/shared_ptr_base.h:736
#6 0x00005555556eb980 in
abigail::xml_reader::read_context::perform_late_type_canonicalizing
(this=0x5555558308e0) at /usr/include/c++/10/ext/atomicity.h:100
#7 0x00005555556d53e7 in abigail::xml_reader::read_corpus_from_input
(ctxt=...) at ../../src/abg-reader.cc:1977
#8 0x000055555559956f in main (argc=<optimized out>, argv=0x7fffffffd738) at
/usr/include/c++/10/bits/shared_ptr_base.h:1324
The assertion is:
ABG_ASSERT(!class_or_union
|| !class_or_union->get_is_anonymous()
|| class_or_union->get_linkage_name().empty());
I'll see if I can reproduce this with a minimum of XML transformation.
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* [Bug default/27661] The XML reader gives anonymous types non-empty linkage_name
2021-03-29 15:10 [Bug default/27661] New: The XML reader gives anonymous types non-empty linkage_name gprocida+abigail at google dot com
@ 2021-03-29 15:34 ` gprocida+abigail at google dot com
0 siblings, 0 replies; 2+ messages in thread
From: gprocida+abigail at google dot com @ 2021-03-29 15:34 UTC (permalink / raw)
To: libabigail
https://sourceware.org/bugzilla/show_bug.cgi?id=27661
--- Comment #1 from Giuliano Procida <gprocida+abigail at google dot com> ---
Created attachment 13336
--> https://sourceware.org/bugzilla/attachment.cgi?id=13336&action=edit
Compressed, reordered libandroid.so ABI from tests
The particular XML transformation that tickles the issue is reordering all type
and declaration elements into a single replacement abi-instr.
abidiff hits the assertion on the attached file.
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