X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f X-Trace-PostClient-IP: 68.147.131.211 From: Brian Inglis Newsgroups: comp.os.msdos.djgpp Subject: Re: Strange error message Organization: Systematic Software Message-ID: References: <84e4e2a9 DOT 0404140726 DOT 77691a0d AT posting DOT google DOT com> X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 52 Date: Wed, 14 Apr 2004 21:26:17 GMT NNTP-Posting-Host: 24.71.223.147 X-Complaints-To: abuse AT shaw DOT ca X-Trace: pd7tw2no 1081977977 24.71.223.147 (Wed, 14 Apr 2004 15:26:17 MDT) NNTP-Posting-Date: Wed, 14 Apr 2004 15:26:17 MDT To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com On 14 Apr 2004 08:26:29 -0700 in comp.os.msdos.djgpp, jbs30000 AT aol DOT com (Joel) wrote: >I'm trying to test an idea I have about writing an interrupt handler, >but when I compiled the program as I was going along (to catch errors >early) I got a strange error a couple of times. So I saw a demo >program in one of the help files, so I copied and pasted it, just >making a couple of changes like adding void to the function and >commenting out do_stuff() since it's not a function, and adding >#include and #include , tried compiling the test >program, and go the same error. I wondered if my copy of djgpp was >damaged, so I tried it on another copy I have on another drive, and >still, same error. So it's my code that's the problem, since the >sample code given gives the same error, and it's not a damaged copy of >djgpp. So, I'll show the sample code, and the error, and hope that >someone can tell me what's causing it. Thanks. >#include >#include > void my_handler(_go32_dpmi_registers *r) > { > r->d.eax = 4; > } > > void setup() > { > _go32_dpmi_seginfo info; > info.pm_offset = my_handler; >The error refersed to the info.pm_offset = my_handler > Error: error: invalid conversion from `void (*)(__dpmi_regs*)' to >`long > unsigned int' The example in libc.info node _go32_dpmi_allocate_real_mode_callback_iret is incorrect, as you need to cast your function pointer to the unsigned long pm_offset: info.pm_offset = (unsigned long)my_handler; and the -ansi compiler option is out! >Also, in my program (not listed) I get the same error when I try to >_go32_dpmi_lock_code a function of mine. -- Thanks. Take care, Brian Inglis Calgary, Alberta, Canada Brian DOT Inglis AT CSi DOT com (Brian dot Inglis at SystematicSw dot ab dot ca) fake address use address above to reply