[Bug c/83369] Missing diagnostics during inlining

["msebor at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83369

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2017-12-11
                 CC|                            |msebor at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.

Now that the warning diagnostic supports the %G directive the warning call can
be adjusted to make use of it to produce the following output.  Let me post a
patch with the fix.

In function ‘char* my_strcpy(char*, const char*, size_t)’,
    inlined from ‘void test(Test*)’ at pr83369.c:32:18:
pr83369.c:14:24: warning: argument 1 null where non-null expected [-Wnonnull]
     size_t len = strlen(src);
                  ~~~~~~^~~~~
In file included from pr83369.c:1:
/usr/include/string.h: In function ‘void test(Test*)’:
/usr/include/string.h:394:15: note: in a call to function ‘size_t strlen(const
char*)’ declared here
 extern size_t strlen (const char *__s)
               ^~~~~~
In function ‘char* my_strcpy(char*, const char*, size_t)’,
    inlined from ‘void test(Test*)’ at pr83369.c:32:18:
pr83369.c:16:15: warning: argument 2 null where non-null expected [-Wnonnull]
         memcpy(dst, src, len + 1);
         ~~~~~~^~~~~~~~~~~~~~~~~~~
In file included from pr83369.c:1:
/usr/include/string.h: In function ‘void test(Test*)’:
/usr/include/string.h:42:14: note: in a call to function ‘void* memcpy(void*,
const void*, size_t)’ declared here
 extern void *memcpy (void *__restrict __dest, const void *__restrict __src,
              ^~~~~~
In function ‘char* my_strcpy(char*, const char*, size_t)’,
    inlined from ‘void test(Test*)’ at pr83369.c:32:18:
pr83369.c:19:15: warning: argument 2 null where non-null expected [-Wnonnull]
         memcpy(dst, src, size - 1);
         ~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from pr83369.c:1:
/usr/include/string.h: In function ‘void test(Test*)’:
/usr/include/string.h:42:14: note: in a call to function ‘void* memcpy(void*,
const void*, size_t)’ declared here
 extern void *memcpy (void *__restrict __dest, const void *__restrict __src,
              ^~~~~~