<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion failure in ResolveCondition with cfg-temporary-dtors=true"
href="http://llvm.org/bugs/show_bug.cgi?id=18227">18227</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failure in ResolveCondition with cfg-temporary-dtors=true
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>dconnelly@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11715" name="attach_11715" title="Stack trace">attachment 11715</a> <a href="attachment.cgi?id=11715&action=edit" title="Stack trace">[details]</a></span>
Stack trace
Testing against r197139 on both Linux and Mac. As noted in the summary, the
assertion only fails with cfg-temporary-dtors=true.
A small crashing input is below. I can only reproduce the crash under the
following restrictions on the input:
- The condition of the ternary operator must have the form "(x R y) S (z T w)"
for any x,y,z,w of any type, but R,S,T must each be '&&' or '||'. It is not
required that R,S,T all be the same.
- A().a() can be either the if-value or the else-value or both of the ternary
operator. All three crash.
- The A::a member function must be called on the temporary A instance; A()
alone doesn't crash.
- The destructor A::~A must be explicitly defined. Using the auto-generated
destructor won't crash.
===============================================
Preprocessed source
===============================================
# 1 "<built-in>" 1
# 1 "main.cc" 1
struct A {
~A() {}
void a() {}
};
int main() {
(false && false) && (false && false) ? (void)0 : A().a();
}
===============================================
Invocation
===============================================
clang++ --analyze -Xclang -analyzer-config -Xclang cfg-temporary-dtors=true
main.cc
===============================================
Dumped invocation
===============================================
"/media/gallia/analyzer/build/Debug+Asserts/bin/clang" -cc1 -triple
x86_64-unknown-linux-gnu -analyze -disable-free -main-file-name main.cc
-analyzer-store=region -analyzer-opt-analyze-nested-blocks
-analyzer-eagerly-assume -analyzer-checker=core -analyzer-checker=unix
-analyzer-checker=deadcode -analyzer-checker=cplusplus
-analyzer-checker=security.insecureAPI.UncheckedReturn
-analyzer-checker=security.insecureAPI.getpw
-analyzer-checker=security.insecureAPI.gets
-analyzer-checker=security.insecureAPI.mktemp
-analyzer-checker=security.insecureAPI.mkstemp
-analyzer-checker=security.insecureAPI.vfork -analyzer-output plist -w
-mrelocation-model static -mdisable-fp-elim -fmath-errno -masm-verbose
-mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version
2.22 -fdeprecated-macro -ferror-limit 19 -fmessage-length 318 -mstackrealign
-fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option
-fcolor-diagnostics -vectorize-slp -analyzer-config cfg-temporary-dtors=true -x
c++ main-77ac9d.cpp
===============================================
Stack trace
===============================================
Attached.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>