Regression: Merging segments problem?

[bjoernQ]

Using 25c7db738d039ac02b05def376268c768616b8f3 from https://github.com/jakubpolski/iiot - flashing works with 3.3.0 but fails with latest main
(79bbd67)

Working

I (31) boot: ESP-IDF v5.1-beta1-378-gea5e0ff298-dirt 2nd stage bootloader
I (31) boot: compile time Jun  7 2023 07:48:23
I (33) boot: Multicore bootloader
I (37) boot: chip revision: v3.1
I (41) boot.esp32: SPI Speed      : 40MHz
I (46) boot.esp32: SPI Mode       : DIO
I (50) boot.esp32: SPI Flash Size : 4MB
I (55) boot: Enabling RNG early entropy source...
I (60) boot: Partition Table:
I (64) boot: ## Label            Usage          Type ST Offset   Length
I (71) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (79) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (86) boot:  2 factory          factory app      00 00 00010000 003f0000
I (94) boot: End of partition table
I (98) esp_image: segment 0: paddr=00010020 vaddr=3ffb0000 size=013b4h (  5044) load
I (108) esp_image: segment 1: paddr=000113dc vaddr=3ffcc554 size=00214h (   532) load
I (115) esp_image: segment 2: paddr=000115f8 vaddr=40080000 size=0ba68h ( 47720) load
I (143) esp_image: segment 3: paddr=0001d068 vaddr=3f40d068 size=12d04h ( 77060) map
I (171) esp_image: segment 4: paddr=0002fd74 vaddr=4008ba68 size=002a4h (   676) load
I (172) esp_image: segment 5: paddr=00030020 vaddr=400d0020 size=6b434h (439348) map
I (336) esp_image: segment 6: paddr=0009b45c vaddr=4008bd0c size=00fa8h (  4008) load
I (344) boot: Loaded app from partition at offset 0x10000
I (344) boot: Disabling RNG early entropy source...

Non-working

I (31) boot: ESP-IDF v5.1-beta1-378-gea5e0ff298-dirt 2nd stage bootloader
I (31) boot: compile time Jun  7 2023 07:48:23
I (33) boot: Multicore bootloader
I (37) boot: chip revision: v3.1
I (41) boot.esp32: SPI Speed      : 40MHz
I (46) boot.esp32: SPI Mode       : DIO
I (50) boot.esp32: SPI Flash Size : 4MB
I (55) boot: Enabling RNG early entropy source...
I (60) boot: Partition Table:
I (64) boot: ## Label            Usage          Type ST Offset   Length
I (71) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (79) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (86) boot:  2 factory          factory app      00 00 00010000 003f0000
I (94) boot: End of partition table
I (98) esp_image: segment 0: paddr=00010020 vaddr=3ffb0000 size=013b4h (  5044) load
I (108) esp_image: segment 1: paddr=000113dc vaddr=3ffcc554 size=00214h (   532) load
I (115) esp_image: segment 2: paddr=000115f8 vaddr=40080000 size=0ba68h ( 47720) load
I (143) esp_image: segment 3: paddr=0001d068 vaddr=3f40d068 size=12d04h ( 77060) map
I (171) esp_image: segment 4: paddr=0002fd74 vaddr=4008ba68 size=002a4h (   676) load
I (172) esp_image: segment 5: paddr=00030020 vaddr=400d0020 size=6b408h (439304) map
I (336) esp_image: segment 6: paddr=0009b430 vaddr=4008bd0c size=00fa8h (  4008) load
I (338) esp_image: segment 7: paddr=0009c3e0 vaddr=00000000 size=0f040h ( 61504)
I (363) esp_image: segment 8: paddr=000ab428 vaddr=4013b428 size=0002ch (    44) map
I (370) boot: Loaded app from partition at offset 0x10000
I (370) boot: Disabling RNG early entropy source...
E (372) boot: Image contains multiple IROM segments. Only the last one will be mapped.

[MabezDev]

cc: @bugadani