forked from OSchip/llvm-project
33 lines
1.1 KiB
ReStructuredText
33 lines
1.1 KiB
ReStructuredText
.. title:: clang-tidy - bugprone-infinite-loop
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bugprone-infinite-loop
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======================
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Finds obvious infinite loops (loops where the condition variable is not changed
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at all).
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Finding infinite loops is well-known to be impossible (halting problem).
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However, it is possible to detect some obvious infinite loops, for example, if
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the loop condition is not changed. This check detects such loops. A loop is
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considered infinite if it does not have any loop exit statement (``break``,
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``continue``, ``goto``, ``return``, ``throw`` or a call to a function called as
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``[[noreturn]]``) and all of the following conditions hold for every variable in
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the condition:
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- It is a local variable.
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- It has no reference or pointer aliases.
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- It is not a structure or class member.
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Furthermore, the condition must not contain a function call to consider the loop
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infinite since functions may return different values for different calls.
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For example, the following loop is considered infinite `i` is not changed in
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the body:
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.. code-block:: c++
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int i = 0, j = 0;
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while (i < 10) {
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++j;
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}
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