Don't initialze regions that have a negative size (for example due to a
wrong calculation).
Update #4450
---
cpukit/score/cpu/arm/include/rtems/score/armv7m.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cpukit/score/cpu/arm/include/rtems/score/armv7m.h
b/cpukit/score/cpu/arm/include/rtems/score/armv7m.h
index 8f926e826a..a5eaaef418 100644
--- a/cpukit/score/cpu/arm/include/rtems/score/armv7m.h
+++ b/cpukit/score/cpu/arm/include/rtems/score/armv7m.h
@@ -656,7 +656,7 @@ static inline void _ARMV7M_MPU_Set_region(
RTEMS_OBFUSCATE_VARIABLE(end);
size = (uintptr_t) end - (uintptr_t) begin;
- if ( size > 0 ) {
+ if ( (uintptr_t) end > (uintptr_t) begin ) {
rbar = (uintptr_t) begin | region | ARMV7M_MPU_RBAR_VALID;
rasr |= _ARMV7M_MPU_Get_region_size(size);
} else {
--
2.26.2
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