<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 --- - __attribute__((notnull)) in prototype's parameter is forgotten after function definition"
href="https://llvm.org/bugs/show_bug.cgi?id=30828">30828</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>__attribute__((notnull)) in prototype's parameter is forgotten after function definition
</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>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>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>tss@iki.fi
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Using __attribute__((notnull)) in prototype's parameter works as long as the
function definition hasn't been seen. Afterwards the notnull attribute is lost
and no more warnings are given. This same problem doesn't happen when using
__attribute__((notnull(1))) style.
Example:
//static void foo(char *p) __attribute__((nonnull(1))); // 2 warnings
static void foo(char *p __attribute__((nonnull))); // 1 warning
static void bar(char *p)
{
foo(0); // always gets a warning
}
static void foo(char *p) { }
int main(void)
{
foo(0); // warning missing here
bar(0);
return 0;
}</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>