scripts/coccinelle: New use-g_new-etc.cocci

This is the semantic patch from commit b45c03f585 "arm: Use g_new() &
friends where that makes obvious sense".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220315144156.1595462-2-armbru@redhat.com>

scripts/coccinelle/use-g_new-etc.cocci

@@ -0,0 +1,75 @@
+// Use g_new() & friends where that makes obvious sense
+@@
+type T;
+@@
+-g_malloc(sizeof(T))
++g_new(T, 1)
+@@
+type T;
+@@
+-g_try_malloc(sizeof(T))
++g_try_new(T, 1)
+@@
+type T;
+@@
+-g_malloc0(sizeof(T))
++g_new0(T, 1)
+@@
+type T;
+@@
+-g_try_malloc0(sizeof(T))
++g_try_new0(T, 1)
+@@
+type T;
+expression n;
+@@
+-g_malloc(sizeof(T) * (n))
++g_new(T, n)
+@@
+type T;
+expression n;
+@@
+-g_try_malloc(sizeof(T) * (n))
++g_try_new(T, n)
+@@
+type T;
+expression n;
+@@
+-g_malloc0(sizeof(T) * (n))
++g_new0(T, n)
+@@
+type T;
+expression n;
+@@
+-g_try_malloc0(sizeof(T) * (n))
++g_try_new0(T, n)
+@@
+type T;
+expression p, n;
+@@
+-g_realloc(p, sizeof(T) * (n))
++g_renew(T, p, n)
+@@
+type T;
+expression p, n;
+@@
+-g_try_realloc(p, sizeof(T) * (n))
++g_try_renew(T, p, n)
+@@
+type T;
+expression n;
+@@
+-(T *)g_new(T, n)
++g_new(T, n)
+@@
+type T;
+expression n;
+@@
+-(T *)g_new0(T, n)
++g_new0(T, n)
+@@
+type T;
+expression p, n;
+@@
+-(T *)g_renew(T, p, n)
++g_renew(T, p, n)