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The behavior of this non-compliant example is undefined because the index i used to reference bs may be outside the range of bs, causing . This could cause a write-out-of-bounds error.
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string bs("01234567");
try {
size_t i = f();
bs.at(i) = '\0';
}
catch (...) {
cerr << "Index out of range" << endl;
}
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In any case, the behavior of the index operators is unchecked (no exceptions are thrown).
Non-Compliant Code Example
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STR38-CPP. Use valid references, pointers, and iterators to reference elements of a basic_string objects 07. Characters and Strings (STR) 08. Memory Management (MEM)