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re PR debug/91887 (-fdebug-types-section ICE building chromium)

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2019-10-17  Richard Biener  <rguenther@suse.de>

	PR debug/91887
	* dwarf2out.c (gen_formal_parameter_die): Also try to match
	context_die against a DW_TAG_GNU_formal_parameter_pack parent.

	* g++.dg/debug/dwarf2/pr91887.C: New testcase.

From-SVN: r277090
This commit is contained in:
Richard Biener 2019-10-17 06:16:50 +00:00 committed by Richard Biener
parent 24baab8af4
commit abf0474f8a
4 changed files with 34 additions and 12 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-10-17 Richard Biener <rguenther@suse.de>
PR debug/91887
* dwarf2out.c (gen_formal_parameter_die): Also try to match
context_die against a DW_TAG_GNU_formal_parameter_pack parent.
2019-10-16 Jakub Jelinek <jakub@redhat.com>
* tree-ssa-strlen.c (maybe_invalidate): Use

23
gcc/dwarf2out.c
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@ -22304,19 +22304,18 @@ gen_formal_parameter_die (tree node, tree origin, bool emit_name_p,
/* If the contexts differ, we may not be talking about the same
thing.
??? When in LTO the DIE parent is the "abstract" copy and the
context_die is the specification "copy". But this whole block
should eventually be no longer needed. */
if (parm_die && parm_die->die_parent != context_die && !in_lto_p)
context_die is the specification "copy". */
if (parm_die
&& parm_die->die_parent != context_die
&& (parm_die->die_parent->die_tag != DW_TAG_GNU_formal_parameter_pack
|| parm_die->die_parent->die_parent != context_die)
&& !in_lto_p)
{
if (!DECL_ABSTRACT_P (node))
{
/* This can happen when creating an inlined instance, in
which case we need to create a new DIE that will get
annotated with DW_AT_abstract_origin. */
parm_die = NULL;
}
else
gcc_unreachable ();
gcc_assert (!DECL_ABSTRACT_P (node));
/* This can happen when creating a concrete instance, in
which case we need to create a new DIE that will get
annotated with DW_AT_abstract_origin. */
parm_die = NULL;
}
if (parm_die && parm_die->die_parent == NULL)

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-10-17 Richard Biener <rguenther@suse.de>
PR debug/91887
* g++.dg/debug/dwarf2/pr91887.C: New testcase.
2019-10-16 Martin Sebor <msebor@redhat.com>
PR tree-optimization/83821

12
gcc/testsuite/g++.dg/debug/dwarf2/pr91887.C Normal file
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@ -0,0 +1,12 @@
// { dg-do compile }
// { dg-require-effective-target c++11 }
// { dg-options "-g -fdebug-types-section" }
class A {
public:
A();
template <typename U> A(U);
};
template <class> struct B { typedef A type; };
template <class R, typename... Args>
int Bind(R(Args...), typename B<Args>::type...) { return 0; }
void KeepBufferRefs(A, A) { A a, b(Bind(KeepBufferRefs, a, b)); }