RE: OpenSSL compilation errors in Windows

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Hi Matthias,

 

Yes that's right. The error message is

 

..\..\OpenSSL\openssl-1.1.1c\crypto\../ssl/packet_locl.h(429) : error C2440: '=' : cannot convert from 'void *' to 'unsigned char *' Conversion from 'void*' to pointer to non-'void' requires an explicit cast

 

Sorry, it was missed by mistake. So how can we avoid this?

 

In our code, We included “ssl_locl.h” which in turn includes packet_locl.h. Any way to avoid this kind of error?

 

Thanks and regards,

Nagalakshmi

 

-----Original Message-----
From: Dr. Matthias St. Pierre <Matthias.St.Pierre@xxxxxxxxx>
Sent: Monday, September 30, 2019 2:10 PM
To: Nagalakshmi V J <nagalakshmi.j@xxxxxxxxxx>; openssl-users@xxxxxxxxxxx
Cc: Umamaheswari Nagarajan <umamaheswari.nagarajan@xxxxxxxxxx>
Subject: AW: OpenSSL compilation errors in Windows

 

** This mail has been sent from an external source **

 

 

> Getting the errors like below. ssl/packet_locl.h(429) : error C2440:

> '=' : cannot convert from 'void *' to 'unsigned char 'Conversion from

> 'void' to pointer to non-'void' requires an explicit cast

 

Is it possible that your error message was copied incorrectly? Line 429 is an assignment from 'void *' to 'unsigned char*', not to 'unsigned char'.

 

Such an assignment is allowed in C (and the type is implicitly converted), but not in C++. Is it possible, that you are including this header in a module compiled with a C++ compiler? Note that this is an internal header file and not meant to be included by third party software.

 

HTH,

Matthias

 

 

 

 

 

 

Dr. Matthias St. Pierre

Senior Software Engineer

matthias.st.pierre@xxxxxxxxx

Phone: +49 911 9968-0

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Von: openssl-users <openssl-users-bounces@xxxxxxxxxxx> Im Auftrag von Nagalakshmi V J

Gesendet: Montag, 30. September 2019 08:44

An: openssl-users@xxxxxxxxxxx

Cc: Umamaheswari Nagarajan <umamaheswari.nagarajan@xxxxxxxxxx>

Betreff: OpenSSL compilation errors in Windows

 

Hi,

I am using openssl 1.1.c from our product code. While compiling the code, I am getting the errors which can be suppressed as warnings using -fpermissive flag in Linux (gcc/g++). In windows, I am getting the same compilation errors in visual studio (2005). Would like to know the alternative of -fpermissive flag that can be used in visual studio to suppress the errors.

I tried adding the flags such as '/fpermissive' , '/Ze' in module properties->C/C++->command Line->Additional options. But it did not resolve the problem.

Getting the errors like below. ssl/packet_locl.h(429) : error C2440: '=' : cannot convert from 'void *' to 'unsigned char 'Conversion from 'void' to pointer to non-'void' requires an explicit cast

 

Since it is giving error in Openssl code, we cannot make any code changes there. Has anyone faced this kind of issue?

Please let me know how to resolve this issue.

 

 

 

Thanks and regards,

Nagalakshmi

 

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