[Bug d/123349] New: gdc: buffer overflow detected with -defaultlib=

[ibuclaw at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123349

            Bug ID: 123349
           Summary: gdc: buffer overflow detected with -defaultlib=
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: d
          Assignee: ibuclaw at gdcproject dot org
          Reporter: ibuclaw at gcc dot gnu.org
  Target Milestone: ---

$ gdc -debuglib=a
*** buffer overflow detected ***: terminated
Aborted (core dumped)


Code is currently doing:

    defaultlib = XNEWVEC (char, strlen (arg));
    strcpy (CONST_CAST (char *, defaultlib), arg);

It should be:

    defaultlib = XNEWVEC (char, strlen (arg) + 1);
    strcpy (CONST_CAST (char *, defaultlib), arg);