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Fix gcc 8.1.1 compiler warnings

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CC ../shared.o
../shared.c: In function ‘expand_macro’:
../shared.c:487:3: warning: ‘strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
   strncpy(name, value, len);
   ^~~~~~~~~~~~~~~~~~~~~~~~~
../shared.c:484:9: note: length computed here
   len = strlen(value);
         ^~~~~~~~~~~~~
../ui-shared.c: In function ‘cgit_repobasename’:
../ui-shared.c:136:2: warning: ‘strncpy’ specified bound 1024 equals destination size [-Wstringop-truncation]
  strncpy(rvbuf, reponame, sizeof(rvbuf));
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    CC ../ui-ssdiff.o
../ui-ssdiff.c: In function ‘replace_tabs’:
../ui-ssdiff.c:142:4: warning: ‘strncat’ output truncated copying between 1 and 8 bytes from a string of length 8 [-Wstringop-truncation]
    strncat(result, spaces, 8 - (strlen(result) % 8));
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2018-07-04 03:13:31 +02:00
parent c4167cbd65
commit 08a2b1b8f8
3 changed files with 23 additions and 15 deletions
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7
shared.c
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@ -476,15 +476,16 @@ static int is_token_char(char c)
static char *expand_macro(char *name, int maxlength)
{
char *value;
int len;
size_t len;
len = 0;
value = getenv(name);
if (value) {
len = strlen(value);
len = strlen(value) + 1;
if (len > maxlength)
len = maxlength;
strncpy(name, value, len);
strlcpy(name, value, len);
--len;
}
return name + len;
}