c++
PartitionStream: Breaking change
The :cppStorage::PartitionStream constructors with blockErase parameter have been deprecated. The intended default behaviour is read-only, however previously this also allowed writing without block erase. This can result in corrupted flash contents where the flash has not been explicitly erased beforehand.
The new constructors instead use a :cppStorage::Mode so behaviour is more explicit. The default is read-only and writes will now be failed.
64-bit time_t
There is some variability in whether time_t is 32 or 64 bits. See issue #2758.
This is dependent on the toolchain and accompanying C library.
32-bits:
- Esp32 IDF 4.x
- Windows Host (using mingw)
- Linux host builds prior to Sming v5.2
Range of time_t:
-0x80000000: 1901-12-13 20:45:52 0x00000000: 1970-01-01 00:00:00 0x7fffffff: 2038-01-19 03:14:07
All others use 64-bit values.
For reference, C library source code can be found here https://sourceware.org/git/?p=newlib-cygwin.git;a=blob;f=newlib/libc/
Rp2040 builds with standard ARM toolkit so probably accommodated by the standard repo.
Espressif toolchains use forks:
esp8266: https://github.com/earlephilhower/newlib-xtensa/blob/xtensa-4_0_0-lock-arduino/newlib/libc/ esp32: https://github.com/espressif/newlib-esp32/blob/esp-4.3.0/newlib/libc/