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<head>
<base href="http://llvm.org/bugs/" />
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<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 '!isImplicitAccess()' involving decltype and default function template arguments"
href="http://llvm.org/bugs/show_bug.cgi?id=15700">15700</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failure '!isImplicitAccess()' involving decltype and default function template arguments
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</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>C++11
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>zeratul976@hotmail.com
</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>For the following code:
struct S
{
template <typename T, typename U = int>
U foo_impl(T);
template <typename T>
auto foo(T t) -> decltype(foo_impl(t));
};
int main()
{
S s;
s.foo(0);
}
with clang r178972 I get the following assertion failure:
clang: llvm/tools/clang/lib/AST/../../include/clang/AST/ExprCXX.h:3227: const
clang::Expr *clang::UnresolvedMemberExpr::getBase() const: Assertion
`!isImplicitAccess()' failed.
0 clang 0x0000000001e903d5 llvm::sys::PrintStackTrace(_IO_FILE*) +
37
1 clang 0x0000000001e908c3
2 libpthread.so.0 0x00007f398af678f0
3 libc.so.6 0x00007f398a05ab25 gsignal + 53
4 libc.so.6 0x00007f398a05e670 abort + 384
5 libc.so.6 0x00007f398a0539f1 __assert_fail + 241
6 clang 0x00000000011b77ed
7 clang 0x00000000011b7dc5
8 clang 0x00000000011b3211
9 clang 0x00000000011bb55d
10 clang 0x00000000011ae0bd
11 clang 0x000000000081ec8f
clang::CodeGen::CodeGenModule::getMangledName(clang::GlobalDecl) + 751
12 clang 0x0000000000823a3b
clang::CodeGen::CodeGenModule::GetAddrOfFunction(clang::GlobalDecl,
llvm::Type*, bool) + 75
13 clang 0x00000000008c7105
clang::CodeGen::CodeGenFunction::EmitCXXMemberCallExpr(clang::CXXMemberCallExpr
const*, clang::CodeGen::ReturnValueSlot) + 1413
14 clang 0x00000000008bb6e6
clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*,
clang::CodeGen::ReturnValueSlot) + 262
15 clang 0x00000000008ea148
16 clang 0x00000000008e3d1d
17 clang 0x00000000008dcbfd
clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) + 93
18 clang 0x00000000008aad29
clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*,
clang::CodeGen::AggValueSlot, bool) + 249
19 clang 0x00000000008aac29
clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*) + 57
20 clang 0x000000000093a177
clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 343
21 clang 0x000000000093fd8b
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot) + 91
22 clang 0x0000000000817eb9
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&) + 713
23 clang 0x0000000000822f27
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl)
+ 663
24 clang 0x0000000000820284
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl) + 228
25 clang 0x000000000082235d
clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) + 781
26 clang 0x00000000008255b5
clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) + 1173
27 clang 0x000000000080cb3f
28 clang 0x000000000080bfd7
29 clang 0x0000000000959253 clang::ParseAST(clang::Sema&, bool, bool)
+ 435
30 clang 0x000000000080b5a2 clang::CodeGenAction::ExecuteAction() +
194
31 clang 0x0000000000692c81 clang::FrontendAction::Execute() + 113
32 clang 0x000000000067293d
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 909
33 clang 0x00000000006594f7
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 3031
34 clang 0x000000000064f615 cc1_main(char const**, char const**, char
const*, void*) + 693
35 clang 0x00000000006564f1 main + 8609
36 libc.so.6 0x00007f398a045c4d __libc_start_main + 253
37 clang 0x000000000064f229
Stack dump:
0. Program arguments: /home/nr/Programs/clang/clang-3.3-20130406/bin/clang
-cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-main-file-name test2.cpp -mrelocation-model static -mdisable-fp-elim
-fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables
-fuse-init-array -target-cpu x86-64 -target-linker-version 2.20.1
-coverage-file /home/nr/Dev/Projects/C++/test/test.o -resource-dir
/home/nr/Programs/clang/clang-3.3-20130406/bin/../lib/clang/3.3
-internal-isystem
/home/nr/Programs/gcc/gcc-4.8.0/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../include/c++/4.8.0
-internal-isystem
/home/nr/Programs/gcc/gcc-4.8.0/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../include/c++/4.8.0/x86_64-unknown-linux-gnu
-internal-isystem
/home/nr/Programs/gcc/gcc-4.8.0/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../include/c++/4.8.0/backward
-internal-isystem
/home/nr/Programs/gcc/gcc-4.8.0/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../include/x86_64-unknown-linux-gnu/c++/4.8.0
-internal-isystem /usr/local/include -internal-isystem
/home/nr/Programs/clang/clang-3.3-20130406/bin/../lib/clang/3.3/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-std=c++11 -fdeprecated-macro -fdebug-compilation-dir
/home/nr/Dev/Projects/C++/test -ferror-limit 19 -fmessage-length 0
-mstackrealign -fobjc-runtime=gcc -fobjc-default-synthesize-properties
-fcxx-exceptions -fexceptions -fdiagnostics-show-option -backend-option
-vectorize-loops -o test.o -x c++ src/test.cpp
1. <eof> parser at end of file
2. src/test2.cpp:10:5: LLVM IR generation of declaration 'main'
3. src/test2.cpp:10:5: Generating code for declaration 'main'
4. src/test2.cpp:7:10: Mangling declaration 'S::foo'
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.3 (trunk 178972)
Target: x86_64-unknown-linux-gnu
Thread model: posix</pre>
</div>
</p>
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