[OOB_5_4] tls-client got "SSL - Memory allocation failed"

[soramame21]

I got following error when running tls-client on NUCLEO_F746ZG.
It related memory handling by IAR compiler.

How to build the bad executable

mbed compile -m NUCLEO_F746ZG -t IAR -c > bb0 2>&1

mbed export -i IAR -m NUCLEO_F746ZG -vv > aa 2>&1
then click Make, Download and Debug on IAR Embedded Workbench.

mbed export -i make_iar -m NUCLEO_F746ZG -vv > a00 2>&1
make clean
make V=1 > ren02 2>&1

How to build a working executable

mbed compile -m NUCLEO_F746ZG -t GCC_ARM -c > bb2 2>&1

[soramame21]

@SimonB @MarceloSalazar Could you give comment for this issue?

[simonbutcher]

Looks like a memory problem. The suspicion is the heap isn't big enough with IAR.

@mazimkhan - Can you please look at this?

[mazimkhan]

@soramame21 please try with latest mbed-os that has fix for the memory issue.

[ciarmcom]

ARM Internal Ref: IOTSSL-1248

[soramame21]

@mazimkhan I'll try it tomorrow. thanks.

[mazimkhan]

Memory issue for NUCLEO_F429ZI and UBLOX ODIN W2 is fixed by mbed-os ARMmbed/mbed-os#3871
For NUCLEO_F746ZG new fix need to be done.

[mazimkhan]

Please try with this PR on mbed-os
ARMmbed/mbed-os#3902

[mazimkhan]

Updated my comment above. This issue should be fixed by ARMmbed/mbed-os#3902

[MarceloSalazar]

I confirm PR ARMmbed/mbed-os#3902 fixes memory allocation problem when building with IAR
@0xc0170 please add a note to the mbed OS known issue list

[soramame21]

@mazimkhan @MarceloSalazar yes, I verified the fix for IAR toolchain as well.

[mazimkhan]

Can this be closed now?