topic Re: [S32K3X] About newlib in S32K

[S32K3X] About newlib

Changhawn — Wed, 19 Jun 2024 05:29:48 GMT

Dear

About LWIP Network stack
When loading the lwip stack, an assertion occurs in rand() as shown in the log below.

assertion "REENT malloc succeeded" failed: file "../../../../../../../../src_newlib/newlib/libc/stdlib/rand.c", line 78

It operates normally if the related rand() is removed or newlib is set to no I/O like picture

We are in an environment that uses FreeRTOS + LWIP + MbedTLS(HSE),

Please guide me on which newlib to use and how to correct the above problem to accurately resolve it.

Changhawn — Fri, 21 Jun 2024 02:14:02 GMT

Additional reproduction comment.

A1. make sample project for RTD testing.

A2. change as newlib semihost or newlib nano semihost in library support

A3. add rand() in main function.

A4. run and test

B1. make FreeRTOS + LWIP + MbedTLS(HSE) project

B2. do as A2 , A3, A4

compare Between A & B, check if working is ok?

Changhawn — Thu, 27 Jun 2024 01:22:03 GMT

Refer to Below link, did workaround.

jiri_kral — Tue, 09 Jul 2024 12:03:21 GMT

Hi,

did you tried newlib instead newlib_nano? Newlib_nano has some limitations.