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commit 542447d4708d4418a08e678dcf467af92b90b7ad
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Author: Mark Wielaard <mark@klomp.org>
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Date: Mon Nov 22 13:07:59 2021 +0100
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readdwarf3.c (parse_inl_DIE) inlined_subroutine can appear in namespaces
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This was broken by commit 75e3ef0f3 "readdwarf3: Skip units without
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addresses when looking for inlined functions". Specifically by this
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part: "Also use skip_DIE instead of read_DIE when not parsing
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(skipping) children"
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rustc puts concrete function instances in namespaces (which is
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allowed in DWARF since there is no strict separation between type
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declarations and program scope entries in a DIE tree), the inline
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parser didn't expect this and so skipped any DIE under a namespace
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entry. This wasn't an issue before because "skipping" a DIE tree was
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done by reading it, so it wasn't actually skipped. But now that we
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really skip the DIE (sub)tree (which is faster than actually parsing
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it) some entries were missed in the rustc case.
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https://bugs.kde.org/show_bug.cgi?id=445668
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diff --git a/coregrind/m_debuginfo/readdwarf3.c b/coregrind/m_debuginfo/readdwarf3.c
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index 18eecea9f..5489f8d13 100644
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--- a/coregrind/m_debuginfo/readdwarf3.c
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+++ b/coregrind/m_debuginfo/readdwarf3.c
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@@ -3358,7 +3358,7 @@ static Bool parse_inl_DIE (
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// might maybe contain a DW_TAG_inlined_subroutine:
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Bool ret = (unit_has_addrs
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|| dtag == DW_TAG_lexical_block || dtag == DW_TAG_subprogram
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- || dtag == DW_TAG_inlined_subroutine);
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+ || dtag == DW_TAG_inlined_subroutine || dtag == DW_TAG_namespace);
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return ret;
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bad_DIE:
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