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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - No warning when dereferencing pointers within a (fixed-size) array"
href="https://bugs.llvm.org/show_bug.cgi?id=52343">52343</a>
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<th>Summary</th>
<td>No warning when dereferencing pointers within a (fixed-size) array
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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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>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eyalroz1@gmx.com
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>Consider the following two functions:
void foo() {
int *as[2];
*(as[0])=1;
}
void bar() {
int i = 0;
int *as[2];
for(i=0;i<1;i++)
{
*(as[i])=i;
}
}
for both of them, a warning should be issued about the dereferencing of an
uninitialized pointer. clang does not issue a warning on any of them when
compiling with -Wall.
See this on GodBolt: <a href="https://godbolt.org/z/e98GW679v">https://godbolt.org/z/e98GW679v</a>
Related GCC bug (which does issue a warning for the first function):
<a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102996">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102996</a></pre>
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</p>
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