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<base href="https://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 --- - [debug info] Template parameter packs - incorrect arguments in appear in gdb" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24269&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=-G42rbnsVCMxgK7NpuJ5ZTZkUqFA9-YjW4UEixUtKGU&s=sGIFXfRaeHUkluDQMgr-gR0vIxQY63Ppk1MuK-vJ444&e=">24269</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[debug info] Template parameter packs - incorrect arguments in appear in gdb
</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>
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<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++11
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hfinkel@anl.gov
</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>$ cat /tmp/d2.cpp
#include <iostream>
using namespace std;
template <typename ... T>
void foo(T ... t) {
cout << "here\n";
}
int main() {
foo(3, 3, 5, 6);
}
$ clang++ -std=c++14 -g -o ~/tmp/d /tmp/d2.cpp
$ gdb ~/tmp/d
GNU gdb (GDB) 7.7
...
Reading symbols from ~/tmp/d...done.
(gdb) b main
Breakpoint 1 at 0x4007a3: file /tmp/d2.cpp, line 10.
(gdb) s
The program is not being run.
(gdb) r
Starting program: ~/tmp/d
Breakpoint 1, main () at /tmp/d2.cpp:10
10 foo(3, 3, 5, 6);
(gdb) s
foo<int, int, int, int> (t=6, t=6, t=6, t=6) at /tmp/d2.cpp:6
6 cout << "here\n";
(gdb) p t
$1 = 6
(gdb) quit
The '(t=6, t=6, t=6, t=6)' bit is clearly wrong. This obviously might be a gdb
bug; I don't know how to tell. FWIW, MS Visual Studio produces
pseudo-parameters t_0, t_1, etc. Perhaps that would be better?</pre>
</div>
</p>
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