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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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12
ui-ssdiff.c
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@ -114,11 +114,10 @@ static char *replace_tabs(char *line)
{
char *prev_buf = line;
char *cur_buf;
int linelen = strlen(line);
size_t linelen = strlen(line);
int n_tabs = 0;
int i;
char *result;
char *spaces = " ";
if (linelen == 0) {
result = xmalloc(1);
@ -126,20 +125,23 @@ static char *replace_tabs(char *line)
return result;
}
for (i = 0; i < linelen; i++)
for (i = 0; i < linelen; i++) {
if (line[i] == '\t')
n_tabs += 1;
}
result = xmalloc(linelen + n_tabs * 8 + 1);
result[0] = '\0';
while (1) {
for (;;) {
cur_buf = strchr(prev_buf, '\t');
if (!cur_buf) {
strcat(result, prev_buf);
break;
} else {
strncat(result, prev_buf, cur_buf - prev_buf);
strncat(result, spaces, 8 - (strlen(result) % 8));
linelen = strlen(result);
memset(&result[linelen], ' ', 8 - (linelen % 8));
result[linelen + 8 - (linelen % 8)] = '\0';
}
prev_buf = cur_buf + 1;
}