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Questions - static-variables

Optimizing away static variable / passing by reference

In this question Will a static variable always use up memory? it is stated that compilers are allowed to optimize away a static variable if the address is never taken, e.g. like following: void f() { ...
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tommsch

c++

pass-by-reference

compiler-optimization

static-variables

Votes: 0

Answers: 2

Latest Answer

that compilers are allowed to optimize away a static variable if the address is never taken You seem to concentrated on the wrong part of the answer. The answer states: the compiler can do anything...
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KamilCuk

c programming using a static variable and then pointing to it ? possible?

In c when creating and returning the address in a static variable inside a function would it be the same as initializing a simple int sNum2 = 0 ; int * temp = &sNum2; ? static will basically have ...
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user14570759

c

function

pointers

memory-address

static-variables

Votes: 0

Answers: 3

Latest Answer

This is valid code. A static variable, whether declared at file scope or inside of a function, has full program lifetime. That means its address will always be valid and can be safely dereferenced at...
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dbush

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