[riot-notifications] [RIOT-OS/RIOT] cpu/msp430_common: set top of heap for sbrk (#10943)

Gunar Schorcht notifications at github.com
Tue Mar 12 17:06:44 CET 2019

gschorcht commented on this pull request.

> @@ -26,6 +26,8 @@
 extern void board_init(void);
+#define STACK_EXTRA 32

`STACK_EXTRA` is simply a margin to leave some space on the stack for the calls of `kernel_init` and further `cpu_switch_context_exit`. It  ensures that the stack pointer doesn't decrease to `__heap_end` before it is set to any thread stack in `kernel_init`.

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