Systemd/coccinelle/free_and_replace.cocci at 3b319885c4febb5f7ea9b5ab31c3395548ed6886 - picnoir/Systemd - Alternativebit

picnoir/Systemd

Zbigniew Jędrzejewski-Szmek 3b319885c4 tree-wide: introduce free_and_replace helper

It's a common pattern, so add a helper for it. A macro is necessary
because a function that takes a pointer to a pointer would be type specific,
similarly to cleanup functions. Seems better to use a macro.

2016-10-16 23:35:39 -04:00

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 @@
 expression p, q;
 @@
 - free(p);
 - p = q;
 - q = NULL;
 - return 0;
 + return free_and_replace(p, q);
 @@
 expression p, q;
 @@
 - free(p);
 - p = q;
 - q = NULL;
 + free_and_replace(p, q);