Probleme with latest ARM Toolchain and time functions

[julieninnovel]

Hello,

I have a project based on a STM32 using the internal RTC.

I was using the toolchain “arm-eabi-gcc7.2.0-r3” to translate a timestamp UNIX to a tm struct and sthen set my RTC like this :

#include 
#include <sys\time.h>

void RTC_SetTimeByTimeStamp(uint32_t u32_TimeStamp)
{
struct tm* p_time;
/* convert into unix time struct */
p_time = gmtime((time_t*)&u32_TimeStamp);
...
}

 

All was OK. If I call this function with a timestamp at 1576158671, the p_time struct contain :

12/12/2019  13:51:11

But with the latset toolchain “arm-eabi-gcc9.2.1”, the same function, call with the same timestamp value set the p_time struct with random value like :

2/1/1971721  11:25:06

 

Thanks for your help.

 

• This topic was modified 5 years ago by support. Reason: formatting

[support]

Sorry, the latest ARM toolchain comes directly from ARM and we do not control the logic it uses for translating time.

As a workaround, please try using a time conversion function from an external library, or try submitting a bugreport via ARM forums.

[CrzyRndm]

https://os.mbed.com/questions/80116/time_t-is-broken-with-2017-q4-releas-of-/

time_t is now a 64 bit integer, a 32 bit pointer is not going to end well

[support]

Thanks for pointing this out!

[Author]

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