<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 --- - Assertion failure parsing block expressions with nonnull attributes"
href="https://llvm.org/bugs/show_bug.cgi?id=23117">23117</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failure parsing block expressions with nonnull attributes
</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>
<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>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>An assertion failure occurs in Clang 3.5 through trunk (r234011) when a nonnull
attribute appears on a Block expression. Clang 3.4 issues a warning for these
cases. The check for a non-function declaration that previously resulted in
the warning was removed in r199387.
$ cat t.c
void(^bp1)(int *) = ^(int *p1) __attribute__((nonnull(1))) {};
$ clang-trunk --version
clang version 3.7.0 (trunk 234011)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang-trunk -c -fblocks t.c
clang:
/nfs/thonermann/src/llvm-trunk/tools/clang/lib/Sema/SemaDeclAttr.cpp:260: bool
checkFunctionOrMethodParameterIndex(clang::Sema &, const clang::Decl *, const
clang::AttributeList &, unsigned int, const clang::Expr *, uint64_t &):
Assertion `isFunctionOrMethod(D)' failed.
...
$ clang-3.4 --version
clang version 3.4 (tags/RELEASE_34/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang-3.4 -c -fblocks t.c
t.c:1:47: warning: 'nonnull' attribute only applies to functions
[-Wignored-attributes]
void(^bp1)(int *) = ^(int *p1) __attribute__((nonnull(1))) {};
^
1 warning generated.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>