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<base href="http://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 --- - Clang assertion failure when issuing a diagnostic while compiling from an AST file"
href="http://llvm.org/bugs/show_bug.cgi?id=15377">15377</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang assertion failure when issuing a diagnostic while compiling from an AST file
</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>Frontend
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>thonermann@coverity.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=10100" name="attach_10100" title="Gdb backtrace for the assertion failure">attachment 10100</a> <a href="attachment.cgi?id=10100&action=edit" title="Gdb backtrace for the assertion failure">[details]</a></span>
Gdb backtrace for the assertion failure
This assertion failure reproduces with Clang 3.2 and Clang trunk as of
26-Feb-2013.
The following code is ill-formed:
$ cat t.cpp
template<typename T>
T tf() {
static const T i;
return i;
}
void f() {
tf<int>();
}
Compiling it directly to object file results in an appropriate diagnostic:
$ clang -c t.cpp
t.cpp:5:20: error: default initialization of an object of const type 'const
int'
static const T i;
^
t.cpp:10:5: note: in instantiation of function template specialization
'tf<int>'
requested here
tf<int>();
^
1 error generated.
Emitting to an AST file and then compiling from it results in an assertion
failure when constructing the diagnostic:
$ clang -emit-ast t.cpp
$ clang -v -c t.ast
clang version 3.2 (tags/RELEASE_32/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
"/nfs/thonermann/clang-3.2/installs/linux64-debug/bin/clang" -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name
t.ast -mrelocation-model static -mdisable-fp-elim -fmath-errno -masm-verbose
-mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version
2.22 -momit-leaf-frame-pointer -v -coverage-file
/nfs/thonermann/prevent-clang/clang/testcases/emit/globals/psf-useval-template-function-local-static-const-int/t.o
-resource-dir
/nfs/thonermann/clang-3.2/installs/linux64-debug/bin/../lib/clang/3.2
-fdebug-compilation-dir
/nfs/thonermann/prevent-clang/clang/testcases/emit/globals/psf-useval-template-function-local-static-const-int
-ferror-limit 19 -fmessage-length 197 -mstackrealign -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -o t.o -x ast t.ast
clang -cc1 version 3.2 based upon LLVM 3.2svn default target
x86_64-unknown-linux-gnu
clang:
/nfs/thonermann/clang-3.2/llvm-3.2/tools/clang/lib/Frontend/TextDiagnosticPrinter.cpp:148:
virtual void
clang::TextDiagnosticPrinter::HandleDiagnostic(clang::DiagnosticsEngine::Level,
const clang::Diagnostic&): Assertion `TextDiag && "Unexpected diagnostic
outside source file processing"' failed.
clang: error: unable to execute command: Segmentation fault (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.2 (tags/RELEASE_32/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg: Error generating preprocessed source(s) - no
preprocessable inputs.
A backtrace is attached.</pre>
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