ori_b on Never create Ruby strings longer than 23 characters

Comment on Never create Ruby strings longer than 23 characters parent

You can allocate the string with one malloc:

    RString *s = malloc(sizeof(RString) + length); /* allocate 'length' bytes extra memory past the end of 's' */
    s->data = s + 1; /* to the extra memory past the start of the string struct */

teaspoon 14y

Ruby strings are mutable, so you need to be able to free s->data without freeing the RString itself.

ori_b 14y

    s = realloc(s, sizeof(RString));

charliesome 14y

MRI objects are not relocatable so that won't work if realloc has to move the structure in memory

dchest 14y

Nitpick: sizeof(RString) + length may overflow size_t.

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