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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Bogus parsing derivation of enum-base from type-specifier-seq"
href="http://llvm.org/bugs/show_bug.cgi?id=19810">19810</a>
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<th>Summary</th>
<td>Bogus parsing derivation of enum-base from type-specifier-seq
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.4
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++11
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hstong@ca.ibm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Source code which parses with C++03 fails when using Clang's implementation of
C++11.
>From the grammar in N3290, it seems an enum-base may only appear before '{' or
';'.
It looks like the Clang parser picked a production which failed and did not
backtrack.
ICC (which does understand enum-base) does not have this problem.
### SOURCE:> cat enumBaseVersusConditional.cc
enum E { E1 };
void foo() {
false ? new enum E : int();
}
Return: 0x00:0
### COMPILER INVOCATION AND OUTPUT:> clang++ -std=c++11
enumBaseVersusConditional.cc -c
enumBaseVersusConditional.cc:3:25: error: non-integral type 'int ()' is an
invalid underlying type
false ? new enum E : int();
^
enumBaseVersusConditional.cc:3:30: error: expected ':'
false ? new enum E : int();
^
:
enumBaseVersusConditional.cc:3:10: note: to match this '?'
false ? new enum E : int();
^
enumBaseVersusConditional.cc:3:30: error: expected expression
false ? new enum E : int();
^
3 errors generated.
Return: 0x01:1
### EXPECTED OUTPUT:> clang++ -std=c++03 enumBaseVersusConditional.cc -c
Return: 0x00:0
### VERSION INFO:> clang++ -v
clang version 3.4
Target: powerpc64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation: /usr/lib/gcc/ppc64-redhat-linux/4.4.4
Found candidate GCC installation: /usr/lib/gcc/ppc64-redhat-linux/4.4.6
Selected GCC installation: /usr/lib/gcc/ppc64-redhat-linux/4.4.6
Return: 0x00:0</pre>
</div>
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