C Memory¶
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memory alignment（内存对齐）¶
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Memory alignment: a system-dependent rule that tells us where data
can be stored (usually not at every byte) -
Can be accomplished with the "aligned" attribute
__attribute__((aligned(n)));
Strings¶
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Example: The string “Hi” is stored in memory as an array of characters. This array would look like: {‘H’, ‘i’, ‘\0’}
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If the null terminator is missing, C will continue to read memory as if
it was part of the string until it comes across a byte that happens to have value 0. - This is a very common source of bugs.