Gpc

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5400 discussions

struct memory allocation problem
by vanam srihari kumar 29 Nov '05

29 Nov '05

Dear All Thanks for your cooperation. Again I am clearly explaining what my problem is. I have records like below PASTimeTag = RECORD high : INTEGER; low : INTEGER; END; meaobj_record = RECORD next : meaobj_pointer; prev : meaobj_pointer; status : INTEGER; timetag : PASTimeTag; value : REAL; END; meaobj_pointer = ^meaobj_record; If I print the size of the records using sizeof functions I am getting below results. sizeof(PASTimeTag) = 8 bytes (*which is correct bcoz INTEGER occupies 4 bytes ) sizeof(meaobj_record) = 32 bytes (*Actually it should be 28 bytes(meaobj_pointer=4+meaobj_pointer=4+ INTEGER=4+PASTimeTag=8+REAL=8)but it is allocating 32 bytes which is multiple of 8 near to 28*) If I am trying to access real field in the record from the pascal program it is giving 'signal SIGSEGV, Segmentation fault' but it is not happening all the times.In the debug mode I could access all the fields except real variable during the crash. This is the major problem preventing me to go further since several days. Please suggest me some solution. Regards Hari __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs

3 2

Math functions and Floating point types
by lanceboyle＠bluebottle.com 29 Nov '05

29 Nov '05

I tried posting this to the Mac Pascal (Pascal Central) list but for some reason it is not making it. =============================== I might be confused about how to import math functions in GPC. GPC itself doesn't seem to have the functions that I need (I'm looking in gpc.pas), but in the docs there is a mention of math.pas. However, I can't find such a file in my GPC installation. Do I need to use (non-portable) Mac math libraries? If so, is fp.p still the preferred interface? In the case of more common functions such as trig stuff, does fp.p override the Pascal built-ins? Or conflict with them? I believe that pow() is a problem with respect to conflicts and I see that some headers seem to note this in a compiler directive. Also, I see that floating point types Double and Real are the same and eight bytes, while Extended and LongReal are 16 bytes--is that correct? To make old code work that assumed that Extended is eight bytes, can I write type Extended = Real without my computer exploding? FWIW, I'm porting my own set of tools which needs the math functions and which was originally made on THINK Pascal, then ported to Metrowerks, and now to GPC. Thanks for any help. Jerry

5 8

gpc 2.1 test run result
by vanam srihari kumar 29 Nov '05

29 Nov '05

Below dump is the gpc test run on solaris 2.8 platform Running the GPC Test Suite. This may take a while ... NOTE, if you've used the Test Suite before: To get the long output format, run `make pascal.check-long' now. rm -f *.dat *.o *.s *.gpm *.gpi *.gpd *.gpc core a.out stderr.out *.exe testmake xe rm -f knownbugs/a.out knownbugs/*.exe knownbugs/*.o knownbugs/*.s knownbugs/*.gp rm -f internal/a.out internal/*.exe internal/*.o internal/*.s internal/*.gpm int { gpc --version; gpc --print-search-dirs | grep install; hostname || echo "unkno sed -e 's,^,Testing GPC ,;N;s,\n.*gcc-lib[/\], (,;s,[/\].*,),;N;s,\n, (,;s,$,),' Testing GPC 2.1 (20020510), based on gcc-2.95.2 19991024 (release) (sparc-sun-so echo "gpc -g -O3 -Wall " gpc -g -O3 -Wall PC="gpc" PFLAGS="--autobuild -g -O3 -Wall " SRCDIR="." TEST_MAKE_FLAG=test-make TEST asmtest.pas: SKIPPED: only for IA32 TEST asmtest2.pas: SKIPPED: only for IA32 TEST asmtest3.pas: SKIPPED: only for IA32 TEST crttest.pas: SKIPPED: no curses library found TEST dario.pas: SKIPPED: only for IA32 TEST environo.pas: SKIPPED: setenv not present in libc TEST fjf165a.pas: SKIPPED: German locale not installed TEST fjf273.pas: ld: warning: symbol `bar' has differing sizes: (file ./fjf273u.o value=0xc; file /var/tmp/cc8zaG1E1.o value=0x14); /var/tmp/cc8zaG1E1.o definition taken OK TEST fjf480a.pas: SKIPPED: librx not installed TEST fjf480b.pas: SKIPPED: librx not installed TEST fjf480c.pas: SKIPPED: librx not installed TEST fjf56.pas: SKIPPED: only for IA32 TEST fjf92.pas: SKIPPED: only for IA32 TEST gettext2test.pas: SKIPPED: could not set locale `de_DE' TEST gmptest.pas: SKIPPED: libgmp not installed TEST jj5.pas: SKIPPED: `attribute (stdcall)' not available TEST longr2.pas: SKIPPED: no LongReal math routines available TEST regextest.pas: SKIPPED: librx not installed # of GPC tests 2685 # of GPC tests passed 2667 # of GPC tests skipped 17 # of GPC tests failed 1 I hope gpc is set up properly on my machine Regards Hari __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs

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struct memory allocation problem
by vanam srihari kumar 28 Nov '05

28 Nov '05

Dear All I am using gpc 2.1 version on sun solaris 2.8 . I have problem with the accesing structures containing real variables. I observed following things 1) I checked size of structures containing real varibles using sizeof function,I found out that memory allocated is always in multiples of 8,If I use -fpack-struct option it is allocating correctly but I am unable to access the address of my struct variable as it is packed? 2) I am always getting 'signal SIGSEGV, Segmentation fault' error while accessing real variables of my structures.I am suspecting some problem with memory allocation of structures containing real variables.One Interesting thing is, it is not happening with all structures containg real variables but only few.There is no problem with stack overflow. Please suggest me some way to get rid of this error Regards Hari __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs

3 3

Minor patch to gp
by Adriaan van Os 25 Nov '05

25 Nov '05

The following patch to gp clarifies an error message: --- gp.pas.orig 2005-11-06 21:06:52.000000000 +0100 +++ gp.pas 2005-11-25 14:48:43.000000000 +0100 @@ -1146,7 +1146,9 @@ else if (Dep.Kind = fk_Program) and (NormalizedKind[Kind] = fk_Unit) then ErrorFile (Dep.SrcName, 'used as a unit, but is a program') else - ErrorFile (Dep.SrcName, 'internal error: language mismatch'); + ErrorFile (Dep.SrcName, 'internal error: language mismatch' + NewLine + + '(this can happen if two source files have the same basename,' + NewLine + + ' e.g. foo.pas and foo.c, which is not a good idea)'); if Kind = fk_CFile then Dep.PBLines := Dep.Lines div CLinesDiv else Regards, Adriaan van Os

1 0

segmentation problem
by vanam srihari kumar 25 Nov '05

25 Nov '05

Dear All I landed in a very severe problem (using gpc 2.1 version on solaris) I am seeing the below error in while debugging in gdb Actuall my code handles shared memory ****************************************************************** Program received signal SIGSEGV, Segmentation fault. 0xd49ec in Create_mea (Buf_type=@0xffbe4d74, Default=void, Pages=void, Out_toggle=void, Copy=void, Funct=0, First_mea=@0xfc8082c4, Start_page=void, Dat_ref=0xffba0598) at /home/kvsspl/esipas81/lib/crt_obj.pas:3886 ****************************************************************** I have gone through the several documentation on the above error. I have no clue as why am I getting this error,when I try to debug this,I found that real variable in my record is not getting accesssed. Please suggest me to get rod of this problem. My machine has been setup with max shared memory of 512 MB. I have one more doubt,is _SC_PAGESIZE configurable.Right now it is having 8192 bytes. Regards Hari __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs

2 1

gp -j4
by Peter N Lewis 23 Nov '05

23 Nov '05

I have added support to gp for compiling multiple files simultaneously (akin to the -j4 flag to make). Since I have a dual processor machine, this dropped the total compile time for Interarchy from 8.4 minutes to 6 minutes. I basically replaced ProcessDependencies and CompileIfNecessary, and hardly touched any of the rest of gp. But the sections replaced are essentially complete rewrites. It's not the most elegant of code, is still full of debugging code, is not written in gp-style, and does not currently support a command line switch, is minimally tested, and perhaps not all that efficient, but if anyone is interested, I'm happy to send them the code. Enjoy, Peter. -- <http://www.stairways.com/> <http://download.stairways.com/>

3 4

symbol problem
by vanam srihari kumar 23 Nov '05

23 Nov '05

Dear All What could be the reason for this kind of problems I am passing all the parameters perfectly still I am seeing this problem while debugging with gdb ************************************************************** 0xd5804 in Create_mea (Buf_type=@0xffbe4d74, Default=void, Pages=void, Out_toggle=void, Copy=void, Dat_ref=Invalid C/C++ type code 13 in symbol table. ) ************************************************************** Regards Hari __________________________________ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.yahoo.com

1 0

libraries
by vanam srihari kumar 22 Nov '05

22 Nov '05

Dear all I am porting the code which is developed on sun pc and cc compilers to gcc and gpc.But I did not remove sun pc and cc compilers from my machine,anyway I am not using them for compilation. But I have several doubts, please clarify them 1)I have libc, but I donot have glibc,Do I have to load glibc or libc is enough? 2)I am linking the below libraries besides 'libgcc' and 'libgpc',these libraries are sun libraries,Do we have any equivalent libraries? libXol libXt libX11 libsocket libintl libnsl libw libposix4 libdl libc libm libxnet libsunmath 3)Do I have to change the standard includes directory when I use gpc and gcc. Regards Hari __________________________________ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.yahoo.com

2 1

preprocessor problem
by vanam srihari kumar 18 Nov '05

18 Nov '05

Dear All I am porting code developed by using sun pc and cc compilers to gcc(2.95.2) and gpc(2.1) Now I have landed in a preprocessor related problem,please see below code. str_255 = PACKED ARRAY[1..256] OF CHAR; Str_ptr = ^Str_255; strptr : str_ptr; p : str_ptr; #define PAS_ADDTO_PTR(ptr,value) (Pointer(integer(ptr) + value)) #define PAS_TYPECAST(right, left_type) left_type(right) p := PAS_TYPECAST(PAS_ADDTO_PTR(strptr,pos-1),str_ptr); when I use above macros and assign the p pointer,it is pointing to junk values. But when I manually replace all the preprocessor definitions like below, it is working fine. p := str_ptr(Pointer(integer(strptr) + (pos-1))); Please suggest me as what to do and also let me know other bugs related to preprocessor. Regards Hari __________________________________ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com

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