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c++ Programming Glossary: behaviourhttp://stackoverflow.com/questions/1008019/c-singleton-design-pattern will not work on C What are all the common undefined behaviour that a C programmer should know about share improve this answer..
How do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work There are many different optimizations to this standard behaviour for example for small chunks of memory . But since malloc and.. since malloc and free must be so universal the standard behaviour is always the fallback when alternatives are not usable. There.. This will crash the system. This is a rather graceful behaviour. I have also seen situations where a runnaway pointer somewhere..
How do we explain the result of the expression (++x)+(++x)+(++x)? http://stackoverflow.com/questions/1525187/how-do-we-explain-the-result-of-the-expression-xxx this question We explain it by expecting undefined behaviour rather than any particular result. As the expression attempts..
Why does an overridden function in the derived class hide other overloads of the base class? http://stackoverflow.com/questions/1628768/why-does-an-overridden-function-in-the-derived-class-hide-other-overloads-of-the of same name not signature in the base class. Somehow this behaviour of C does not look OK. Not polymorphic. c polymorphism overriding..
Reading from text file until EOF repeats last line http://stackoverflow.com/questions/21647/reading-from-text-file-until-eof-repeats-last-line checking code to keep the code snippet small. The above behaviour is seen on Windows Visual C cygwin gcc and Linux gcc . c iostream.. your code. Did you ever try to run it on an empty file The behaviour you get is for the exact same reason. share improve this answer..
How to use Boost in Visual Studio 2010 http://stackoverflow.com/questions/2629421/how-to-use-boost-in-visual-studio-2010 build are in the same directory which is the default behaviour . A possible workaround is to do a Build All of debug build..
What are all the common undefined behaviour that a C++ programmer should know about? [closed] http://stackoverflow.com/questions/367633/what-are-all-the-common-undefined-behaviour-that-a-c-programmer-should-know-ab are all the common undefined behaviour that a C programmer should know about closed Say like a i i..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points its merely a separator between the arguments a and a . The behaviour is undefined in that case if a is considered to be a primitive.. Standard defines Undefined Behaviour in Section §1.3.12 as behaviour such as might arise upon use of an erroneous program construct.. Standard imposes no requirements 3 . Undefined behaviour may also be expected when this International Standard omits..
When to use virtual destructors? http://stackoverflow.com/questions/461203/when-to-use-virtual-destructors a Base pointing to a Derived object delete b has undefined behaviour . In most implementations the call to the destructor will be..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers type traits which work for me but may cause unexpected behaviour with non container classes that provide iterators. Header prettyprint.h..
Is short-circuiting boolean operators mandated in C/C++? And evaluation order? http://stackoverflow.com/questions/628526/is-short-circuiting-boolean-operators-mandated-in-c-c-and-evaluation-order requirement. You can do it but it may break expected behaviour in other people's code especially if these operators are used..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks but it's now deprecated because it has a strange copying behaviour. And then there are some even smarter examples like std shared_ptr..
What happens if you static_cast invalid value to enum class? http://stackoverflow.com/questions/18195312/what-happens-if-you-static-cast-invalid-value-to-enum-class 0 100 the resulting value is specified and no Undefined Behaviour UB is involved. More generally as you cast from the underlying..
Multiple preincrement operations on a variable in C++(C ?) http://stackoverflow.com/questions/3690141/multiple-preincrement-operations-on-a-variable-in-cc in interpreted as phew However your code invokes Undefined Behaviour because you are trying to modify the value of phew more than..
Potential Problem in “Swapping values of two variables without using a third variable” http://stackoverflow.com/questions/3741440/potential-problem-in-swapping-values-of-two-variables-without-using-a-third-var with the code Yes a^ b^ a^ b in fact invokes Undefined Behaviour in C and in C because you are trying to change the value of..
http://stackoverflow.com/questions/3784996/why-does-left-shift-operation-invoke-undefined-behaviour-when-the-left-side-oper does left shift operation invoke Undefined Behaviour when the left side operand has negative value In C bitwise.. value In C bitwise left shift operation invokes Undefined Behaviour when the left side operand has negative value. Relevant quote.. header . That means int a 1 b 2 c c a b invokes Undefined Behaviour in C but the behaviour is well defined in C . What forced the..
Difference between i = ++i and ++i [duplicate] http://stackoverflow.com/questions/3914315/difference-between-i-i-and-i share improve this question i i invokes Undefined Behaviour whereas i does not. C 03 Section 5 4 says Between the previous..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points are Sequence Points What is the relation between Undefined Behaviour and Sequence Points I often use funny and convoluted expressions.. an implied sequence point between them. What is Undefined Behaviour The Standard defines Undefined Behaviour in Section §1.3.12.. What is Undefined Behaviour The Standard defines Undefined Behaviour in Section §1.3.12 as behaviour such as might arise upon use..
http://stackoverflow.com/questions/4705593/int-vs-const-int valid any more lifetime issue and you enter the Undefined Behaviour realm. Aliasing issues are also a source of subtle problems..
Operator Precedence vs Order of Evaluation http://stackoverflow.com/questions/5473107/operator-precedence-vs-order-of-evaluation leads to Undefined Behavior. This shows how Undefined Behaviour is tightly coupled with Sequence Points . Now let us take another..
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