fortify-headers - Standalone portable header-based implementation of FORTIFY

Age	Commit message (Collapse)	Author
22 hours	Fix strncat/wcsncat	jvoisin
	Previously, no checks were done when __n <= __b, but strncat _appends_ after existing content, making this a overly broad check check. For example, with an 8-byte buffer containing "12345\0", strncat(buf, "ABCD", 4) would have the check skipped, but the result "12345ABCD\0" is 10 bytes, resulting in an overflow. This commit fixes this oversight, and adds a bunch of tests.
29 hours	Fix a bug in wcsnrtombs	jvoisin
	__d is a char * destination buffer, so __b is already the byte capacity. Dividing by sizeof(wchar_t) makes no sense here, it was likely copy-pasted from mbsnrtowcs (where the destination is wchar_t *). The first branch also fails to limit __n (the byte write cap) to __b, so overflows are possible when a wide character produces multi-byte output. The second branch (else) correctly limits __n to __b. This commit replaces the broken two-branch logic with the simple correct pattern matching wcsrtombs, and adds two tests two prove that nothing broke.