<p><b>@benpicco</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11866#discussion_r324480045">cpu/cc3200/periph/gpio.c</a>:</p>
<pre style='color:#555'>> @@ -62,7 +67,8 @@ static uint32_t ports[] = {
 /**
  * @brief   static callback memory
  */
-static gpio_isr_ctx_t isr_ctx[ARRAY_SIZE(ports)][GPIO_PINS_PER_PORT];
+static gpio_isr_ctx_t isr_ctx[sizeof(ports) / sizeof(uint32_t)]
+                             [GPIO_PINS_PER_PORT];
</pre>
<p>It's in <a href="https://github.com/RIOT-OS/RIOT/blob/master/core/include/kernel_defines.h"><code>kernel_defines.h</code></a> - although you might have to rebase to <code>master</code> to get it <g-emoji class="g-emoji" alias="wink" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/1f609.png">😉</g-emoji></p>

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