http://llvm.org/bugs/show_bug.cgi?id=15636
Bug ID: 15636
Summary: clang should warn on suspicious increments of loop
variables
Product: clang
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Consider the following code snippet:
void foo(char *a, char *b, unsigned c) {
for (unsigned i = 0; i < c; ++i) {
a[i] = b[i];
++i;
}
}
clang does not currently warn on this, even though the code is likely incorrect
(incrementing i both in the loop latch and in the body of the loop). clang
should produce a warning when it detects a variable that is incremented in the
latch of the for header, and *unconditionally* incremented in the body of the
loop.
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