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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 - Warn on suspicious taking of function address instead of calling a function"
href="https://bugs.llvm.org/show_bug.cgi?id=43904">43904</a>
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<th>Summary</th>
<td>Warn on suspicious taking of function address instead of calling a function
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>antoshkka@gmail.com
</td>
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<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 simple example:
bool function();
int test() {
auto result = function;
if (result) {
return 1;
} else {
return 2;
}
}
Students and scholars often forget to put braces to actually call the function.
Please, extend the -Wpointer-bool-conversion warning to detect the above case
with auto and warn:
<source>:4:19: warning: address of function 'function' will always evaluate to
'true' [-Wpointer-bool-conversion]
if (result) {
^~~~~~
<source>:4:19: note: prefix with the address-of operator to silence this
warning
auto result = function;
^
&
<source>:4:19: note: suffix with parentheses to turn this into a function call
auto result = function;
^
()</pre>
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