Details
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Bug
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Resolution: Invalid
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P3: Somewhat important
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None
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5.12.1
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None
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macOS
Description
Pretty straightforward, following snippet just crashes on my machine. I don't know if it is something to do with Clang or Qt, but I wanted to bring it up here.
#include <QtCore> int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); QVector<QString> vector; vector.append("Hello"); // but vector.value(0) doesn't crash const QString& ref = vector.at(0); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); vector.append(ref + '/'); return a.exec(); }
My Setup:
macOS 10.14.3
Apple LLVM version 10.0.0 (clang-1000.11.45.2)
Target: x86_64-apple-darwin18.2.0
My Stack Trace:
thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=EXC_I386_GPFLT) 1 std::__atomic_base<int, false>::load(std::memory_order) const atomic 929 0x109619442 2 int QAtomicOps<int>::load<int>(std::atomic<int> const&) qatomic_cxx11.h 227 0x10961940b 3 QBasicAtomicInteger<int>::load() const qbasicatomic.h 103 0x1096193c5 4 QtPrivate::RefCount::ref() qrefcount.h 55 0x109619719 5 QString::QString(QString const&) qstring.h 958 0x1096196e8 6 QString::QString(QString const&) qstring.h 958 0x10961957d 7 operator+(QString const&, char) qstring.h 1363 0x1096191b9 8 main main.cpp 17 0x109618988 9 start (x86_64) /usr/lib/system/libdyld.dylib 0x7fff73baced9
