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Fix: Assertion failed: (!m_first_die || m_first_die == m_die_array.front()), function ExtractDIEsRWLocked 

xbolva00 bugreported $subj in: https://reviews.llvm.org/D46810#1247410
It can happen only from the line:
	m_die_array.back().SetEmptyChildren(true);

In the case DW_TAG_compile_unit has DW_CHILDREN_yes but there is only 0 (end of
list, no children present). Therefore the assertion can fortunately happen only
with a hand-crafted DWARF or with DWARF from some suboptimal compilers.

Differential Revision: https://reviews.llvm.org/D53255

llvm-svn: 344605
This commit is contained in:
Jan Kratochvil 2018-10-16 11:38:22 +00:00
parent 0c29722c60
commit faec6dd9a2
1 changed files with 5 additions and 1 deletions
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6
lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
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@ -261,7 +261,11 @@ void DWARFUnit::ExtractDIEsRWLocked() {
}
if (!m_die_array.empty()) {
lldbassert(!m_first_die || m_first_die == m_die_array.front());
if (m_first_die) {
// Only needed for the assertion.
m_first_die.SetEmptyChildren(m_die_array.front().GetEmptyChildren());
lldbassert(m_first_die == m_die_array.front());
}
m_first_die = m_die_array.front();
}