Merge pull request #10938 from tymoteuszblochmobica/iar

K64F, STM32F429: IAR linker scripts dynamic  heap fix

Author: 0xc0170

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/device/TOOLCHAIN_IAR/MK64FN1M0xxx12.icf

@@ -117,7 +117,7 @@ define region CSTACK_region = mem:[from m_data_2_end-__size_cstack__+1 to m_data
 define region m_interrupts_ram_region = mem:[from m_interrupts_ram_start to m_interrupts_ram_end];
 
 define block CSTACK    with alignment = 8, size = __size_cstack__   { };
-define block HEAP      with alignment = 8, size = __size_heap__     { };
+define block HEAP      with expanding size, alignment = 8, minimum size = __size_heap__     { };
 define block RW        { readwrite };
 define block ZI        { zi };
 

targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/device/TOOLCHAIN_IAR/stm32f429xx_flash.icf

@@ -36,7 +36,7 @@ define exported symbol __CRASH_DATA_RAM_START__ = __region_CRASH_DATA_RAM_start_
 define exported symbol __CRASH_DATA_RAM_END__ = __region_CRASH_DATA_RAM_end__;
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+define block HEAP      with expanding size, alignment = 8, minimum size = __ICFEDIT_size_heap__     { };
 
 initialize by copy { readwrite };
 do not initialize  { section .noinit };