<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 --- - clang++ crashes on std::function assignment lambda"
href="http://llvm.org/bugs/show_bug.cgi?id=15477">15477</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang++ crashes on std::function assignment lambda
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</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>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>c664595@rmqkr.net
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Compiling the following code crashes clang++ 3.0 :
$ cat tumble.cpp
#include <functional>
struct server
{
server()
{
onopen = [](){};
}
std::function<void ()> onopen;
};
int main()
{
}
$ clang++ -v
Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
Target: x86_64-pc-linux-gnu
Thread model: posix
$ clang++ -std=c++0x tumble.cpp
0 libLLVM-3.0.so.1 0x00007f3b0b1fffcf
1 libLLVM-3.0.so.1 0x00007f3b0b200591
2 libpthread.so.0 0x00007f3b0a189cb0
3 clang 0x000000000093beea clang::Sema::BuildBinOp(clang::Scope*,
clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) +
74
4 clang 0x000000000093c17e clang::Sema::ActOnBinOp(clang::Scope*,
clang::SourceLocation, clang::tok::TokenKind, clang::Expr*, clang::Expr*) + 110
5 clang 0x000000000080f77f
clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*,
true>, clang::prec::Level) + 431
6 clang 0x000000000080fe9f
clang::Parser::ParseAssignmentExpression() + 47
7 clang 0x0000000000810c59 clang::Parser::ParseExpression() + 9
8 clang 0x00000000007d35f2
clang::Parser::ParseExprStatement(clang::ParsedAttributes&) + 50
9 clang 0x00000000007cfe18
clang::Parser::ParseStatementOrDeclaration(clang::ASTOwningVector<clang::Stmt*,
32u>&, bool) + 2616
10 clang 0x00000000007cca11
clang::Parser::ParseCompoundStatementBody(bool) + 417
11 clang 0x00000000007cd6fa
clang::Parser::ParseFunctionStatementBody(clang::Decl*,
clang::Parser::ParseScope&) + 138
12 clang 0x00000000007e98d9
clang::Parser::ParseLexedMethodDef(clang::Parser::LexedMethod&) + 601
13 clang 0x00000000007e9609
clang::Parser::ParseLexedMethodDefs(clang::Parser::ParsingClass&) + 121
14 clang 0x0000000000807dc7
clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, unsigned int,
clang::Decl*) + 2407
15 clang 0x0000000000808f2b
clang::Parser::ParseClassSpecifier(clang::tok::TokenKind,
clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo
const&, clang::AccessSpecifier, bool) + 3275
16 clang 0x00000000007f78f1
clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&,
clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier,
clang::Parser::DeclSpecContext) + 593
17 clang 0x00000000007e2c39
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsingDeclSpec&,
clang::AccessSpecifier) + 89
18 clang 0x00000000007e32e6
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&,
clang::AccessSpecifier) + 678
19 clang 0x00000000007e4ead
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::Parser::ParsingDeclSpec*) + 2685
20 clang 0x00000000007e5417
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 167
21 clang 0x00000000007bcbfd clang::ParseAST(clang::Sema&, bool) +
269
22 clang 0x00000000006a6253 clang::CodeGenAction::ExecuteAction() +
51
23 clang 0x00000000005adc7f
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 319
24 clang 0x000000000059653a
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1114
25 clang 0x000000000058e1c4 cc1_main(char const**, char const**,
char const*, void*) + 820
26 clang 0x000000000058cb3c main + 620
27 libc.so.6 0x00007f3b098c676d __libc_start_main + 237
28 clang 0x000000000058dd39
Stack dump:
0. Program arguments: /usr/bin/clang -cc1 -triple x86_64-pc-linux-gnu
-emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name
tumble.cpp -mrelocation-model static -mdisable-fp-elim -masm-verbose
-mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version
2.22 -momit-leaf-frame-pointer -resource-dir /usr/bin/../lib/clang/3.0
-fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem
/usr/include/c++/4.6 -internal-isystem /usr/include/c++/4.6/x86_64-linux-gnu
-internal-isystem /usr/include/c++/4.6/backward -internal-isystem
/usr/local/include -internal-isystem /usr/bin/../lib/clang/3.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /usr/include -std=c++0x -fdeprecated-macro
-ferror-limit 19 -fmessage-length 182 -fgnu-runtime -fobjc-runtime-has-arc
-fobjc-runtime-has-weak -fobjc-fragile-abi -fcxx-exceptions -fexceptions
-fdiagnostics-show-option -fcolor-diagnostics -o /tmp/tumble-iWs1QC.o -x c++
tumble.cpp
1. tumble.cpp:7:18: current parser token ';'
2. tumble.cpp:3:1: parsing struct/union/class body 'server'
3. tumble.cpp:6:2: parsing function body 'server'
4. tumble.cpp:6:2: in compound statement ('{}')
clang: error: unable to execute command: Segmentation fault (core dumped)
clang: error: clang frontend command failed due to signal 2 (use -v to see
invocation)
clang: note: diagnostic msg: Please submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include command line arguments and all diagnostic
information.
clang: note: diagnostic msg: Preprocessed source(s) are located at:
clang: note: diagnostic msg: /tmp/tumble-6idLFq.ii</pre>
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