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Ensure result buffer termination in String_cat utility routine

This commit is contained in:
Nathan Scott 2020-08-20 09:03:45 +10:00
parent 74d547674d
commit 5228f5d47a
1 changed files with 3 additions and 2 deletions
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5
StringUtils.c
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@ -30,8 +30,9 @@ char* String_cat(const char* s1, const char* s2) {
int l1 = strlen(s1);
int l2 = strlen(s2);
char* out = xMalloc(l1 + l2 + 1);
strncpy(out, s1, l1);
strncpy(out+l1, s2, l2+1);
memcpy(out, s1, l1);
memcpy(out+l1, s2, l2+1);
out[l1 + l2] = '\0';
return out;
}