[SOLVED] stm32f303 – warning: changing start of section .text by 8 bytes

ld.exe: warning: changing start of section .text by 8 bytes
ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .text by 8 bytes
ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .text by 8 bytes
ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .text by 8 bytes
ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .text by 8 bytes
ld.exe: warning: changing start of section .bss by 4 bytes

Program size: 34.932 bytes (used 53% of a 65.536 byte maximum) (1,31 secs)
Minimum Memory Usage: 6844 bytes (56% of a 12288 byte maximum)

Uploading ‘PROG’ to ‘Nucleo-32’ using ‘COM11’
STM32 ST-LINK CLI v3.0.0.0
STM32 ST-LINK Command Line Interface
ST-LINK SN : 0676FF323535474B43033459
The upload process has finished.
ST-LINK Firmware version : V2J29M18
Connected via SWD.
SWD Frequency = 4000K.
Target voltage = 3.3 V.
Connection mode : Normal.
Device ID:0x438
Device flash Size : 64 Kbytes
Device family :STM32F303x4-x6-x8/F328xx/F334xx
Loading file…
Flash Programming:
File : E:\PROG.ino.bin
Address : 0x08000000
Memory programming…
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± 0%
0%ÛÛÛÛÛÛÛÛÛÛÛÛÛ 27%ÛÛÛÛÛÛÛÛÛÛÛÛÛÛ 54%ÛÛÛÛÛÛÛÛÛÛÛÛÛÛ 82%ÛÛÛÛÛÛÛÛÛ 100%
Memory programmed in 3s and 463ms.
Programming Complete.
MCU Reset.
run application to exit
Application started.

Thanks and best regards.

To avoid this warning, correction is to add ALIGN(x) in the impacted section. Ex for the:
ld.exe: warning: changing start of section .text by 8 bytes

Replace:
.text :

Thank you very much.

Fran

ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .bss by 4 bytes
ld.exe: warning: changing start of section .bss by 4 bytes

Program size: 34.940 bytes (used 53% of a 65.536 byte maximum) (73,10 secs)
Minimum Memory Usage: 6844 bytes (56% of a 12288 byte maximum)

Compiling ‘prog’ for ‘Nucleo-32’
ld.exe: address 0x100011e4 of ….prog.ino.elf section .bss is not within region RAM
ld.exe: …prog.ino.elf section ._user_heap_stack will not fit in region RAM

Error linking for board Nucleo-32
ld.exe: address 0x100011e4 of …prog.ino.elf section .bss is not within region RAM

Build failed for project ‘prog’
ld.exe: region RAM overflowed by -268441624 bytes

collect2.exe*: error: ld returned 1 exit status

I left it as it was.

/* Uninitialized data section */
. = ALIGN(4);
.bss : <——————————————————————————I have changed this by: .bss ALIGN(4):
{
/* This is used by the startup in order to initialize the .bss secion */
_sbss = .; /* define a global symbol at bss start */
__bss_start__ = _sbss;
*(.bss)
*(.bss*)
*(COMMON)

. = ALIGN(4);
_ebss = .; /* define a global symbol at bss end */
__bss_end__ = _ebss;
} >RAM

/* User_heap_stack section, used to check that there is enough RAM left */
._user_heap_stack :
{
. = ALIGN(8);
PROVIDE ( end = . );
PROVIDE ( _end = . );
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(8);
} >RAM

/* Remove information from the standard libraries */
/DISCARD/ :
{
libc.a ( * )
libm.a ( * )
libgcc.a ( * )
}

.ARM.attributes 0 : { *(.ARM.attributes) }
}

What weird things.

Thank you so much for everything

I will launch a full build this night to see if all are corrected. In my current built, I have no .bss alignment issue.