https://bugs.kde.org/show_bug.cgi?id=488069
Bug ID: 488069
Summary: Reproducible crash in libclang after
::Visitor::setTypeSize
Classification: Applications
Product: kdevelop
Version: git master
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: Language Support: CPP (Clang-based)
Assignee: kdevelop-bugs-n...@kde.org
Reporter: benjamin-h...@t-online.de
Target Milestone: ---
SUMMARY
Today I observed an crash in KDevelop, and I was able to extract a single
source file that can reproduce the crash, see attached file (produced using g++
-E, so no includes required).
The crash seems to happen in (anonymous namespace)::Visitor::setTypeSize in
src/plugins/clang/duchain/builder.cpp:950
KDevelop is built from sources against clang version 18.1.1 (Fedora
18.1.1-1.fc40).
In principle I'm willing to look into this, but currently I do not have time,
and maybe some experts already have an idea what this is.
Backtrace in gdb:
#0 0x00007fffa0ee4104 in clang::ASTContext::getTypeInfoImpl(clang::Type
const*) const () at /lib64/libclang.so.18.1
#1 0x00007fffa0ee5d5a in clang::ASTContext::getTypeInfoInChars(clang::Type
const*) const () at /lib64/libclang.so.18.1
#2 0x00007fffa0ee5c50 in clang::ASTContext::getTypeInfoInChars(clang::Type
const*) const () at /lib64/libclang.so.18.1
#3 0x00007fffa0ec4efc in clang_Type_getSizeOf () at /lib64/libclang.so.18.1
#4 0x00007fffae29d9a6 in (anonymous namespace)::Visitor::setTypeSize
(type=..., kdevType=kdevType@entry=0x7fff83b924b0, this=<optimized out>)
at
/home/benjamin/Developement/kdevelop/kdevelop/src/plugins/clang/duchain/builder.cpp:950
#5 0x00007fffae2a069d in (anonymous
namespace)::Visitor::dispatchType<(CXTypeKind)177> (this=<optimized out>,
type=..., cursor=...)
at
/home/benjamin/Developement/kdevelop/kdevelop/src/plugins/clang/duchain/builder.cpp:372
#6 (anonymous namespace)::Visitor::makeType (this=<optimized out>, type=...,
parent=...) at
/home/benjamin/Developement/kdevelop/kdevelop/src/plugins/clang/duchain/builder.cpp:1466
#7 0x00007fffae2aa455 in (anonymous
namespace)::Visitor::createType<(CXCursorKind)10> (this=0x7fffa0bff6a0,
cursor=...)
at
/home/benjamin/Developement/kdevelop/kdevelop/src/plugins/clang/duchain/builder.cpp:707
#8 (anonymous namespace)::Visitor::createDeclaration<(CXCursorKind)10,
KDevelop::Declaration> (context=0x0, this=0x7fffa0bff6a0, cursor=..., id=...)
at
/home/benjamin/Developement/kdevelop/kdevelop/src/plugins/clang/duchain/builder.cpp:457
#9 (anonymous namespace)::Visitor::buildDeclaration<(CXCursorKind)10,
KDevelop::Declaration, false> (this=this@entry=0x7fffa0bff6a0, cursor=...)
at
/home/benjamin/Developement/kdevelop/kdevelop/src/plugins/clang/duchain/builder.cpp:1296
#10 0x00007fffae2b2d6f in (anonymous
namespace)::Visitor::dispatchCursor<(CXCursorKind)13, (Decision)1, (Decision)1>
(this=0x7fffa0bff6a0, cursor=..., parent=...)
at
/home/benjamin/Developement/kdevelop/kdevelop/src/plugins/clang/duchain/builder.cpp:988
STEPS TO REPRODUCE
1. open empty session with empty project with attached file
2. wait a bit until background parser starts
OBSERVED RESULT
KDevelop crashes
EXPECTED RESULT
No crash
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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