ARM Compiler toolchain v4.1 for µVision Using the Compiler

Compiler Coding Practices
5.31 Compiler storage of data objects by natural byte alignment
By default, the compiler stores data objects by byte alignment as shown in Table 5-9.
Table 5-9 Compiler storage of data objects by byte alignment
Type Bytes Alignment
char, bool,
_Bool.
short,
wchar_t.
float, int,
long,
pointer.
long long,
double, long
double.
1 Located at any byte address.
2 Located at any address that is evenly divisible by 2.
4 Located at an address that is evenly divisible by 4.
8 Located at an address that is evenly divisible by 8.
5.31.1 See also
Concepts
• Advantages of natural data alignment on page 5-42
• Relevance of natural data alignment at compile time on page 5-44.
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