On Mon, Aug 01, 2016 at 09:49:37PM +0000, Eric Wong wrote:
> +static void setup_pager_env(struct argv_array *env)
> +{
> + const char *pager_env = PAGER_ENV;
> +
> + while (*pager_env) {
> + struct strbuf buf = STRBUF_INIT;
> + const char *cp = strchrnul(pager_env, '=');
> +
> + if (!*cp)
> + die("malformed build-time PAGER_ENV");
> + strbuf_add(&buf, pager_env, cp - pager_env);
> + cp = strchrnul(pager_env, ' ');
> + if (!getenv(buf.buf)) {
> + strbuf_reset(&buf);
> + strbuf_add(&buf, pager_env, cp - pager_env);
> + argv_array_push(env, strbuf_detach(&buf, NULL));
> + }
argv_array handles its own allocation, so this leaks the detached
strbuf.
You'd want:
argv_array_push(env, buf.buf);
strbuf_release(&buf);
or just:
argv_array_pushf(env, "%.*s", (int)(cp - pager_env), pager_env);
Also:
> + strbuf_reset(&buf);
should this be strbuf_release()? If we didn't follow the conditional
above (because getenv() told us the variable was already set), then we
would not do do the detach/release there, and would finish the loop with
memory still allocated by "buf".
-Peff
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