<html>
    <head>
      <base href="https://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 --- - ICE when using malformed raw string literal as default parameter"
   href="https://llvm.org/bugs/show_bug.cgi?id=23110">23110</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>ICE when using malformed raw string literal as default parameter
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>3.6
          </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>new bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>adamschwalm@gmail.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=14142" name="attach_14142" title="stack trace for the sample program">attachment 14142</a> <a href="attachment.cgi?id=14142&action=edit" title="stack trace for the sample program">[details]</a></span>
stack trace for the sample program

When using a malformed raw string literal as a default argument to a member
function template, an internal compiler error occurs. LLVM installed from the
arch linux packages.

Here is a small example case, named test1.cpp and compiled with 'clang++
-std=c++11 test1.cpp' it produces the attached stacktrace:

#include <regex>
#include <string>

struct S {
    template <typename T>
    void foo(std::string s = R"\S+") {}
};

int main() { S{}.foo<int>(); }</pre>
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