IPAddress::operator= needs 32-bit aligned pointer · Issue #8817 · esp8266/Arduino (original) (raw)
Basic Infos
- This issue complies with the issue POLICY doc.
- I have read the documentation at readthedocs and the issue is not addressed there.
- I have tested that the issue is present in current master branch (aka latest git).
- I have searched the issue tracker for a similar issue.
- If there is a stack dump, I have decoded it.
- I have filled out all fields below.
Platform
- Hardware: [ESP-12|ESP-01|ESP-07|ESP8285 device|other]
- Core Version: [Current master / 2.7.4]
- Development Env: [Platformio]
- Operating System: [Windows|Ubuntu]
Settings in IDE
- Module: [Generic ESP8266 Module]
- Flash Mode: [qio|dio|other]
- Flash Size: [4MB/1MB]
- lwip Variant: [v1.4|v2 Lower Memory|Higher Bandwidth]
- Reset Method: [ck|nodemcu]
- Flash Frequency: [40Mhz]
- CPU Frequency: [80Mhz|160MHz]
- Upload Using: [OTA|SERIAL]
- Upload Speed: [115200|other] (serial upload only)
Problem Description
LoadStoreAlignmentCause: Load or store to an unaligned address
epc1=0x402a1358 in IPAddress::operator=(unsigned char const*) at ??:?
en deze stacktrace:
0x4029280d in String::operator=(char const*) at ??:?
0x401012bb in umm_free_core at umm_malloc.cpp:?
0x401015a2 in malloc at ??:?
0x402d1866 in wifi_get_opmode at ??:?
0x402a2568 in spiffs_cache_page_get_by_fd at ??:?
0x402a2568 in spiffs_cache_page_get_by_fd at ??:?
0x402a2568 in spiffs_cache_page_get_by_fd at ??:?
0x402a2568 in spiffs_cache_page_get_by_fd at ??:?
0x4024821f in setConnectionSpeed() at ??:?
0x40248dc2 in prepareWiFi() at ??:?
0x40241468 in WiFiEventData_t::markWiFiBegin() at ??:?
0x40248f29 in AttemptWiFiConnect() at ??:?
0x40205e24 in ESP8266WiFiSTAClass::status() at ??:?
0x40248084 in wifiAPmodeActivelyUsed() at ??:?
0x4024909c in WiFiConnectRelaxed() at ??:?
0x40245ce9 in NetworkConnectRelaxed() at ??:?
0x4024bf23 in ESPEasy_setup() at ??:?
0x40215084 in setup at ??:?
0x40293ddb in loop_wrapper() at core_esp8266_main.cpp:?
0x40100469 in cont_wrapper at ??:?
See the assignment operator and other functions where the const uint8_t* is cast to an const uint32_t*
| IPAddress& IPAddress::operator=(const uint8_t *address) { |
|---|
| setV4(); |
| v4() = *reinterpret_cast<const uint32_t*>(address); |
| return *this; |
| } |
| bool IPAddress::operator==(const uint8_t* addr) const { |
|---|
| return isV4() && v4() == *reinterpret_cast<const uint32_t*>(addr); |
| } |
The call is simply like this:
const IPAddress ip = Settings.IP; const IPAddress gw = Settings.Gateway; const IPAddress subnet = Settings.Subnet; const IPAddress dns = Settings.DNS;
Where all these are part of a larger struct, which begins like this:
unsigned long PID = 0; int Version = 0; int16_t Build = 0; uint8_t IP[4] = {0}; uint8_t Gateway[4] = {0}; uint8_t Subnet[4] = {0}; uint8_t DNS[4] = {0};
As can be seen, these are indeed not 32-bit aligned.
I think the build toolchain may recently have been updated, as this struct and the code that's now failing has not been changed for at least 4 years.
The same code in IPAddress has not been changed for a while as the current master branch has the same code for these functions as the 2.7.4 we're using.