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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Duplicate "Assuming pointer value..." piece."
href="https://bugs.llvm.org/show_bug.cgi?id=42938">42938</a>
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<th>Summary</th>
<td>Duplicate "Assuming pointer value..." piece.
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>9.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Static Analyzer
</td>
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<th>Assignee</th>
<td>dcoughlin@apple.com
</td>
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<th>Reporter</th>
<td>noqnoqneo@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dcoughlin@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>$ cat test.c
static int *conjure();
void use(int);
void foo() {
int *p = conjure();
p && 0;
use(*p);
}
void bar() { foo(); }
$ clang --analyze test.c --analyzer-output text
...
repro.c:7:3: note: Assuming 'p' is null
p && 0;
^
repro.c:7:3: note: Assuming pointer value is null
p && 0;
^
repro.c:7:5: note: Left side of '&&' is false
p && 0;
^
...
The second note, "Assuming pointer value is null", is clearly redundant.
Interestingly, bar() is necessary to reproduce the problem.</pre>
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