`"dear friend"` is in fact a prefix of `"dear friend\0f"` - note the embedded null byte. However, I'm guessing GCC doesn't implement this optimization because i

`"dear friend"` is in fact a prefix of `"dear friend\0f"` - note the embedded null byte. However, I'm guessing GCC doesn't implement this optimization because it's uncommon for a string constant to contain an embedded null. GCC does implement suffix deduplication, though: `"foobar"` and `"bar"` share the same storage. For example, in https://godbolt.org/z/o81xa94v7 https://godbolt.org/z/o81xa94v7, `foobar` is at 0x402004 and `bar` is at 0x402007.