fortify-headers/tests/test_stpncpy_dynamic_write.c, branch strnStandalone portable header-based implementation of FORTIFY_SOURCE=3
http://git.dustri.org/fortify-headers/atom?h=strn2024-10-10T13:50:40ZFix a crash in strncpy/stpncpy2024-10-10T13:50:40Zjvoisin2024-10-10T13:50:40Zurn:sha1:e2cfd2879a15db00dfa9a42eeb1baaef6a930aff
```
Core was generated by `scripts/mod/modpost -M -m -o Module.symvers -n -T modules.order vmlinux.o'.
Program terminated with signal SIGSEGV, Segmentation fault.
warning: 17 src/string/strlen.c: No such file or directory
(gdb) bt
```
> I think strncpy logic is broken: `__fh_size_t max_len_s = strlen(__s);` may try read past `size_t __n`.
> Create a buf without any trailing `\0`, do `strncpy(dest, buf, sizeof(buf));`, it should work, since `strncpy` will stop at `sizeof buf`
> but the current fority-headers implementation will do `strlen(buf)`, which will go boom when it is not terminated with \0
Reported-by: ncopa
Re-enable previously disabled overlap checks2023-12-28T15:13:37Zjvoisin2023-12-27T16:07:32Zurn:sha1:22a8094b41b2606084dc0c0c70487e5ed0fcb652
They were previously disabled in 80a83a5
Add more dynamic tests2023-09-17T14:02:08Zjvoisin2023-09-17T14:02:08Zurn:sha1:267d5dbe4f79b8ebff8588700b2a8c0d1e56fc97