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C/C++

Type-Based Alias Analysis

By Mark Mitchell, October 01, 2000

Aliasing issues make it difficult for compilers to generate code that runs as fast as you might hope. Luckily, the C++ type system makes clear what can and cannot alias.
Oct00: Type-Based Alias Analysis 


<b>(a) </b>
double d = 3.0;
int* ip = (int*) &d;
*ip = 7;

<b>(b) </b>
double d = 3.0;
char* cp = (char*) &d;
*cp = 7;

Example 6: Intentional aliasing. (a) Illegal example; (b) legal example.



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