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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Analyzer crash initializing field with string literal"
href="https://llvm.org/bugs/show_bug.cgi?id=31592">31592</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Analyzer crash initializing field with string literal
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Static Analyzer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>kremenek@apple.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dcoughlin@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>As reported by Miklos Vajna on cfe-dev, the following code causes an assertion
failure in the static analyzer:
$ cat field_initializer.cpp
struct S;
template <typename T> struct C {
public:
C(const S &left_, const T &right_) : left(left_), right(right_) {}
private:
const S &left;
const T &right;
};
template <typename T, int N>
inline T operator+(const T &left, const char (&right)[N]) {
return C<const char[N]>(left, right);
}
struct S {
template <typename T> S(T &) {}
template <typename T> S(const C<T> &) {}
};
S f() { return S("{") + "}"; }
$ clang -cc1 -analyze -analyzer-checker=core field_initializer.cpp
'Assume' not implemented for this NonLoc
UNREACHABLE executed at
/Volumes/Data/Clangs/OpenSourceGit/clang/lib/StaticAnalyzer/Core/SimpleConstraintManager.cpp:126!
0 clang 0x0000000105995d46 llvm::sys::RunSignalHandlers() +
86
1 clang 0x0000000105997429 SignalHandler(int) + 361
2 libsystem_platform.dylib 0x00007fff8b56ebba _sigtramp + 26
Stack dump:
0. Program arguments: ../build/clang-ninja/bin/clang -cc1 -analyze
-analyzer-checker=core field_initializer.cpp
1. <eof> parser at end of file
2. While analyzing stack:
#0 C(const S &left_, char const &right_[2]) : left(left_), right(right_) {}
#1 template<> inline S operator+<S, 2>(const S &left, const char
(&right)[2])
#2 S f()
3. field_initializer.cpp:5:52: Error evaluating initializer
Abort trap: 6</pre>
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