sprintf problem in GCC RX MCU

We are trying to use sprintf function in our code but are facing problems.

In certain cases, the program execution goes into Undefined Exception or Reserved Exception.

System Conditions:

Toolchain: GCC for Renesas RX 4.8.4.201902-SP1-GNURX-ELF

MCU: RX1115 – R5F51115ADFN

IDE: e2Studio v7.6.0

Library Settings:

The following code Executes properly without any issues. 

char A[50] = {};

sprintf(A,”%s”,”HelloBoyos!!!”);

The following code throws an Undefined Exception when executed

char A[50] = {};

sprintf(A,”%s%s”,”Hello”,”Boyos!!!”);

The following code, when executed goes to the following non-existent address 

char A[50] = {};

sprintf(A,”%d”,12);

Are we doing something wrong or is this a bug?

Any assistance will be really useful and greatly appreciated.

Thanks in Advance.

Vikram.