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fix GCC strncpy warnings

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Recent GCC added checks for this and it triggers `Werror` with

```
In function 'strncpy',
    inlined from 'proxy_gethostbyname' at src/core.c:832:2:
/nix/store/hayaj8q9rc7swx4llcjqymmg3zr525lx-glibc-2.32-25-dev/include/bits/string_fortified.h:91:10: error: '__builtin_strncpy' specified bound 8192 equals destination size [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-truncation-Werror=stringop-truncation8;;]
   91 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'strncpy',
    inlined from 'proxy_getaddrinfo' at src/core.c:917:3:
/nix/store/hayaj8q9rc7swx4llcjqymmg3zr525lx-glibc-2.32-25-dev/include/bits/string_fortified.h:91:10: error: '__builtin_strncpy' specified bound 256 equals destination size [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-truncation-Werror=stringop-truncation8;;]
   91 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
```
This commit is contained in:
Richard Marko 2021-02-13 11:14:08 +01:00
parent 148b851d10
commit 412ef4235b
1 changed files with 2 additions and 2 deletions
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4
src/core.c
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@ -829,7 +829,7 @@ struct hostent *proxy_gethostbyname(const char *name, struct gethostbyname_data*
MUTEX_UNLOCK(&internal_ips_lock);
strncpy(data->addr_name, name, sizeof(data->addr_name));
strncpy(data->addr_name, name, sizeof(data->addr_name) - 1);
data->hostent_space.h_name = data->addr_name;
data->hostent_space.h_length = sizeof(in_addr_t);
@ -914,7 +914,7 @@ int proxy_getaddrinfo(const char *node, const char *service, const struct addrin
p->ai_addr = &space->sockaddr_space;
if(node)
strncpy(space->addr_name, node, sizeof(space->addr_name));
strncpy(space->addr_name, node, sizeof(space->addr_name) - 1);
p->ai_canonname = space->addr_name;
p->ai_next = NULL;
p->ai_family = space->sockaddr_space.sa_family = AF_INET;