Re: [PATCH 0/2] fail compilation with strcpy

On Fri, Jul 20, 2018 at 11:58:10AM -0700, Junio C Hamano wrote:

quoted

Note that this needs to be applied on top of 022d2ac1f3 (blame: prefer
xsnprintf to strcpy for colors, 2018-07-13) or it will complain loudly. :)

  [1/2]: introduce "banned function" list
  [2/2]: banned.h: mark strncpy as banned

Hmph, there is no use of any banned function in hex.c, but when
this topic is merged to 'pu', I seem to get this:

Interesting. Builds fine for me even merged to the latest push-out of
pu. But...

$ make DEVELOPER=1 hex.o
GIT_VERSION = 2.18.0.758.g18f90b35b8
    CC hex.o
In file included from git-compat-util.h:1250:0,
                 from cache.h:4,
                 from hex.c:1:
banned.h:14:0: error: "strncpy" redefined [-Werror]
 #define strncpy(x,y,n) BANNED(strncpy)
 
In file included from /usr/include/string.h:630:0,
                 from git-compat-util.h:165,
                 from cache.h:4,
                 from hex.c:1:
/usr/include/x86_64-linux-gnu/bits/string2.h:84:0: note: this is the location of the previous definition
 # define strncpy(dest, src, n) __builtin_strncpy (dest, src, n)

I suspect it has more to do with system/libc differences between our
machines, anyway. There was discussion elsewhere in the thread about the
need to #undef before redefining. I guess this answers that question.

I'll include that in the re-roll, and you can just ignore the v1 patches
I sent for now.

-Peff