Re: [Freedos-devel] Fwd: [Freedos-kernel] Error compiling ...
This looks like a real error to me !!! You can cast a short to an int, an the conversion in ok, but to cast a short* to an int* will bring in 2 extra bytes and an INVALID POINTER... Alain Aitor Santamaría escreveu: Sending over here too, as this list is more popular, and in case someone is not reading there and can contribute. Aitor -- Forwarded message -- From: Hans han...@ht-lab.com Date: 2009/2/15 Subject: Re: [Freedos-kernel] Error compiling ... To: freedos-ker...@lists.sourceforge.net The easy fix to this is use Watcom 1.2. Hans www.ht-lab.com - Original Message - From: George Petculescu To: freedos-ker...@lists.sourceforge.net Sent: Sunday, February 15, 2009 4:07 PM Subject: [Freedos-kernel] Error compiling ... Hello, I have a problem while compiling FreeDOS Kernel. I use latest version of Open Watcom and NASM 0.98. I recive the next error: Process BOOT +++ Process SYS wcc -Ic:\watcom\H -I..\hdr -DFORSYS -DWITHFAT32 -zq-zp1-os-s-we-e3-wx sys.c sys.c(1050): Warning! E1176: Parameter 2, pointer type mismatch sys.c(1050): Note! I2003: source conversion type is 'unsigned short *' sys.c(1050): Note! I2004: target conversion type is 'unsigned int *' sys.c(1050): Note! I2002: '_dos_allocmem' defined in: c:\watcom\H\dos.h(161) sys.c(1079): Warning! E1176: Parameter 2, pointer type mismatch sys.c(1079): Note! I2003: source conversion type is 'unsigned short *' sys.c(1079): Note! I2004: target conversion type is 'unsigned int *' sys.c(1079): Warning! E1176: Parameter 3, pointer type mismatch sys.c(1079): Note! I2003: source conversion type is 'unsigned short *' sys.c(1079): Note! I2004: target conversion type is 'unsigned int *' sys.c(1079): Note! I2002: '_dos_getftime' defined in: c:\watcom\H\dos.h(188) Error(E42): Last command making (sys.obj) returned a bad status Error(E02): Make execution terminated Compilation was aborted! What is the problem ? Should I wrong something in config.bat file ? Thanks, George. -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H ___ Freedos-kernel mailing list freedos-ker...@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-kernel -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H ___ Freedos-kernel mailing list freedos-ker...@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-kernel -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H ___ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H ___ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
Re: [Freedos-devel] Fwd: [Freedos-kernel] Error compiling ...
You can cast a short to an int, an the conversion in ok, but to cast a short* to an int* will bring in 2 extra bytes and an INVALID POINTER... no short * and int * are the exact same size in 16-bit compilers (try compiling a test program which prints sizeof(int), sizeof(short). For some reason openwatcom thinks it's an error. -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H ___ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
Re: [Freedos-devel] Fwd: [Freedos-kernel] Error compiling ...
You can cast a short to an int, an the conversion in ok, but to cast a short* to an int* will bring in 2 extra bytes and an INVALID POINTER... no short * and int * are the exact same size in 16-bit compilers (try compiling a test program which prints sizeof(int), sizeof(short). For some reason openwatcom thinks it's an error. I don't know why unsigned short to unsigned int should be an error if they're the same size (probably so code doesn't get unportable due to this?), but the new OW 1.8 had changes regarding both _dos_allocmem and _dos_getftime. These either caused the warnings or they solved them (if they occured in 1.7) but I think the former: - The date and time arguments to _dos_getftime() and _dos_setftime() are now using 'unsigned int' type instead of 'unsigned short'. This change has been made to improve compatibility with other compilers. - The segment argument used with _dos_allocmem(), _dos_freemem() and _dos_setblock() is now unsigned int instead of unsigned short. This change was made for compatibility with other compilers. This is from http://openwatcom.org/index.php/C_Compilers_Release_Changes#List_of_changes_in_Open_Watcom_1.8 Regards, Christian -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H ___ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
Re: [Freedos-devel] Fwd: [Freedos-kernel] Error compiling ...
Christian Masloch escreveu: You can cast a short to an int, an the conversion in ok, but to cast a short* to an int* will bring in 2 extra bytes and an INVALID POINTER... no short * and int * are the exact same size in 16-bit compilers (try compiling a test program which prints sizeof(int), sizeof(short). For some reason openwatcom thinks it's an error. I don't know why unsigned short to unsigned int should be an error if they're the same size (probably so code doesn't get unportable due to this?), but the new OW 1.8 had changes regarding both _dos_allocmem and _dos_getftime. These either caused the warnings or they solved them (if they occured in 1.7) but I think the former: Ok, I allways use OW for 32 bit programs... for 16 bit it is ok, but at least not recomended. Using the link in the other message I found this, which plainly explains how this problem came around: * The date and time arguments to _dos_getftime() and _dos_setftime() are now using 'unsigned int' type instead of 'unsigned short'. This change has been made to improve compatibility with other compilers. * The segment argument used with _dos_allocmem(), _dos_freemem() and _dos_setblock() is now unsigned int instead of unsigned short. This change was made for compatibility with other compilers. A fix for this would requide conditionals based no the compiler version... really not nice at all :( Alain -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H ___ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
