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Merge pull request #3407 from oni-link/fix.ga_concat

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garray.c: Prevent ga_concat() using memcpy(NULL,...)
This commit is contained in:
Justin M. Keyes
2015-10-01 13:19:49 -04:00
parent bb155564d9 0320d86d3b
commit bb5bf96839
1 changed files with 6 additions and 4 deletions
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10
src/nvim/garray.c
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@@ -184,10 +184,12 @@ char_u* ga_concat_strings(const garray_T *gap) FUNC_ATTR_NONNULL_RET
void ga_concat(garray_T *gap, const char_u *restrict s) void ga_concat(garray_T *gap, const char_u *restrict s)
{ {
int len = (int)strlen((char *) s); int len = (int)strlen((char *) s);
ga_grow(gap, len); if (len) {
char *data = gap->ga_data; ga_grow(gap, len);
memcpy(data + gap->ga_len, s, (size_t) len); char *data = gap->ga_data;
gap->ga_len += len; memcpy(data + gap->ga_len, s, (size_t)len);
gap->ga_len += len;
}
} }
/// Append one byte to a growarray which contains bytes. /// Append one byte to a growarray which contains bytes.