Gpc November 1997

gpc@gnu.de

32 participants
113 discussions

Re: Type problem
by Peter Gerwinski 15 Nov '97

15 Nov '97

According to Jim Brander: > > The cygwin32 version of gpc > gives "invalid operands to binary = " > for comparison of types in following test program. The compiled CygWin32 version of GPC is a little behind the current (beta) state, sorry. The program works well with more recent versions of GPC. Until a recent CygWin32-GPC will be available, maybe an explicit type cast will help? I know that older versions of GPC have problems with subranges of enumerated types ... Hope this helps, Peter Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer peter.gerwinski(a)uni-essen.de - http://home.pages.de/~peter.gerwinski/ [971005] maintainer GNU Pascal [971001] - http://home.pages.de/~gnu-pascal/ [971005]

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Re: Bug report
by Frank Heckenbach 15 Nov '97

15 Nov '97

Krzysztof Gozdziewski wrote: > I have found a strange behaviour of the gpc compiler, > when reading real numbers, having the form > x.xxe+00 > They are converted to 0. > > [...] > > /home/chris/Gravity>gpc --version > 2.0(2.7.2.1) GPC 2.0 is quite an old version (almost a year old now...). I recently rewrote the reading of real numbers completely, and with my code, your example works fine. The new code is not yet present in the latest beta version in GPC, but will be there in the next version to appear. It will be announced here in the list, not too far in the future, I think. -- Frank Heckenbach, Erlangen, Germany fjf(a)gmx.de http://home.pages.de/~fjf/links.htm

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Bug report
by Krzysztof Gozdziewski 15 Nov '97

15 Nov '97

Hello! I have found a strange behaviour of the gpc compiler, when reading real numbers, having the form x.xxe+00 They are converted to 0. The sample session follows. Thanks. Krzysztof Gozdziewski /home/chris/Gravity>uname -a Linux ecia 2.0.30 #2 Sat Sep 27 15:42:44 MET DST 1997 i486 /home/chris/Gravity>gpc --version 2.0(2.7.2.1) /home/chris/Gravity>more test.p program testbug; var a : real; begin writeln('Enter 1.0e+00 to reproduce the error'); readln( a ); writeln( 'a = ', a ); end. /home/chris/Gravity>gpc test.p /home/chris/Gravity>a.out Enter 1.0e+00 to reproduce the error 1.0e+00 a = 2.1883084e-314 /home/chris/Gravity>a.out Enter 1.0e+00 to reproduce the error 2 a = 2.0000000e+00 -- ^-^ ~ Krzysztof Gozdziewski (o o) ~ Torun Centre for Astronomy =*= ~ Gagarina 11, PL-87-100 Torun, POLAND (m_m) ~ http://www.astri.uni.torun.pl/~chris

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Type problem
by Jim Brander 15 Nov '97

15 Nov '97

Many thanks for directions to obtaining cygwin version of gpc. The cygwin32 version of gpc gives "invalid operands to binary = " for comparison of types in following test program. program testtype; type logstate1= (nyk1,uke1,error1,false_p1,true_p1); array_record1 = record state1: logstate1; actual : real; end; type info_array1 = array[0..100] of array_record1; var pinfo:info_array1; begin if (pinfo[3].state1 = nyk1) then pinfo[3].state1 := nyk1; if (pinfo[3].actual = 123.0) then pinfo[3].actual := 456.0; end. Regards Jim Brander

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Type conversions (was: 2 suggestions about Units)
by Peter Gerwinski 14 Nov '97

14 Nov '97

According to Hans Ecke: > > [...] > > A last question: What is the schema of the automatic type-conversion? Is > there a global schema for converting between ordinal,real and string types > or is it only done from case to case? What do you mean by "automatic type-conversion" between ordinal, real, and string types? Assignments like "ordinal:= real" or "string:= integer" are - of course - simply illegal in Pascal. You can assign an integer to a real, but not vice versa. Am I missing something? Peter Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer peter.gerwinski(a)uni-essen.de - http://home.pages.de/~peter.gerwinski/ [971005] maintainer GNU Pascal [971001] - http://home.pages.de/~gnu-pascal/ [971005]

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Variant records, my bad =B)...
by Orlando Llanes 13 Nov '97

13 Nov '97

A short time ago, I said that there was a quirk in BP's SizeOf when it comes to variant records. I haven't tested it in GPC, tho I'm sure it works the same. But I digress, the point is that when I saw the CASE ... structure in other Pascal programs, it must've reported a bigger size because one of the field blocks was bigger than the rest. Hence my calling it a quirk, but as it turns out, it's not a quirk, so I will now go boot myself in the rear now :P See ya! Orlando Llanes "Hey, we all did the drug thing, we all did the money thing, and eventually you find out that none of that stuff fixes anything, and we have nowhere else to go except to evolve spiritually and intellectually" -- Meredith Brooks "Look out fo' flyeeng feet" O__/ a010111t(a)bc.seflin.org \/|____. O <__. \/\> / \ ____________|___\______ http://ourworld.compuserve.com/homepages/Monkey414

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Goodbye, but I'll be back
by Bill Currie 13 Nov '97

13 Nov '97

Well, goodbye. I'm leaving my (now ex) employer and going on to a new on. I should be back on the net soon and I will send posts to the appropriate places when I get my new address. It's been nice knowing you and being part of the djgpp community for the last 2.5 years and gpc for 0.5 years. For anyone trying to get in touch with me, just send posts to djgpp and I'll check the archives (assuming I have web access). Well anyway, goodbye, good luck, and good hacking. Bill -- Leave others their otherness.

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Re: probs compiling current beta GPC
by Clyde Meli 13 Nov '97

13 Nov '97

> According to Clyde Meli: > > /usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.3/include/unistd.h:230: conf > > licting types for `rename' > > /usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.3/include/stdio.h:161: previ > > ous declaration of `rename' > > It seems as if the (AutoConf) configuration script did not recognize > your system correctly. Please try and edit `gpc-config.h' manually > and flip the `HAVE_UNISTD_H' switch. > > Good luck, > > Peter > > Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer > peter.gerwinski(a)uni-essen.de - http://home.pages.de/~peter.gerwinski/ [971005] > maintainer GNU Pascal [971001] - http://home.pages.de/~gnu-pascal/ [971005] > I found what was confusing AUTOCONF - I did not set the CC environment variable (I never did and I never had problems :) ) to /usr/local/bin/gcc (or wherever gcc is located). I recompiled the C compiler now using the precompiled gcc 2.7.2.1 package available on the net. Now I attempted to compile the beta but I ran into problems again, this time with parse.y (I've recompiled bison again - version 1.25 - from what I tried to check I found it should be the latest version) and using the new parse.h which you gave me. Now I got the following errors: # make LANGUAGES=pascal CC=/usr/local/bin/gcc cd p; make "AR_FLAGS=rc" "AR_FOR_TARGET=/usr/local/sparc-sun-solaris2.5.1/bin/ar " "BISON=bison" "BISONFLAGS=" "CC=/usr/local/bin/gcc" "CFLAGS=-g" "GCC_FOR_TARGE T=./xgcc -B./" "LDFLAGS=" "LEX=flex" "LEXFLAGS=" "MAKEINFO=makeinfo" "MAKEINFOFL AGS=" "RANLIB_FOR_TARGET=/usr/local/sparc-sun-solaris2.5.1/bin/ranlib" "RANLIB_T EST_FOR_TARGET=[ -f /usr/local/sparc-sun-solaris2.5.1/bin/ranlib ]" "SHELL=/bin/ sh" "exeext=" "objext=.o" "exec_prefix=/usr/local" "prefix=/usr/local" "tooldir= /usr/local/sparc-sun-solaris2.5.1" "bindir=/usr/local/bin" "libsubdir=/usr/local /lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.3" "CROSS=" "AR_FLAGS=rc" "AR_FOR_TARG ET=/usr/local/sparc-sun-solaris2.5.1/bin/ar" "BISON=bison" "BISONFLAGS=" "CFLAGS =-g" "X_CFLAGS=-DSVR4" "LDFLAGS=" "LEX=flex" "LEXFLAGS=" "MAKEINFO=makeinfo" "MA KEINFOFLAGS=" "MAYBE_TARGET_DEFAULT=" "MAYBE_USE_COLLECT2=" "RANLIB_FOR_TARGET=/ usr/local/sparc-sun-solaris2.5.1/bin/ranlib" "RANLIB_TEST_FOR_TARGET=[ -f /usr/l ocal/sparc-sun-solaris2.5.1/bin/ranlib ]" "SHELL=/bin/sh" "bindir=/usr/local/bin " "exec_prefix=/usr/local" "gxx_include_dir=/usr/local/lib/g++-include" "include dir=/usr/local/include" "libsubdir=/usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1 /2.7.2.3" "prefix=/usr/local" "target_alias=" "tooldir=/usr/local/sparc-sun-sola ris2.5.1" "gpc_version=971001" "rts_version=2.8" "version=2.7.2.3" ../gpc1 make[1]: Entering directory `/usr1/local/src/GNU/SOURCE/gcc-2.7.2.3/p' /usr/local/bin/gcc -c -DIN_GCC -DGPC -DSVR4 -g -Wall \ -I. -I.. -I. -I./.. -I./../config \ `echo ./parse.c | sed 's,^\./,,'` parse.y: In function `yyparse': parse.y:744: warning: implicit declaration of function `error' parse.y:748: warning: implicit declaration of function `get_main_program_name' parse.y:748: warning: assignment makes pointer from integer without a cast parse.y:752: warning: implicit declaration of function `pedwarn' parse.y:755: warning: implicit declaration of function `initialize_module' parse.y:756: `current_module' undeclared (first use this function) parse.y:756: (Each undeclared identifier is reported only once parse.y:756: for each function it appears in.) parse.y:779: warning: implicit declaration of function `associate_external_objec ts' parse.y:789: warning: implicit declaration of function `check_external_objects' parse.y:820: warning: implicit declaration of function `concat' parse.y:821: warning: assignment makes pointer from integer without a cast parse.y:823: warning: implicit declaration of function `no_parameters' parse.y:823: warning: assignment makes pointer from integer without a cast parse.y:839: warning: implicit declaration of function `init_constructor' parse.y:840: warning: implicit declaration of function `un_initialize_block' parse.y:858: warning: assignment makes pointer from integer without a cast parse.y:860: warning: assignment makes pointer from integer without a cast parse.y:884: warning: implicit declaration of function `output_real_main_program ' parse.y:912: warning: implicit declaration of function `store_executable_name' parse.y:1298: `const_id' undeclared (first use this function) parse.y:1305: warning: implicit declaration of function `handle_autoexport' parse.y:1335: warning: implicit declaration of function `declare_vars' parse.y:1487: `size_volatile' undeclared (first use this function) parse.y:1503: warning: implicit declaration of function `build_schema_type' parse.y:1503: warning: assignment makes pointer from integer without a cast parse.y:1506: `type_id' undeclared (first use this function) parse.y:1653: warning: implicit declaration of function `build_pascal_string_sch ema' parse.y:1653: warning: assignment makes pointer from integer without a cast parse.y:1706: warning: implicit declaration of function `declared_string_capacit y' parse.y:1716: warning: assignment makes pointer from integer without a cast parse.y:1851: warning: implicit declaration of function `maybe_schema_discrimina nt' parse.y:1851: warning: implicit declaration of function `string_may_be_char' parse.y:1851: warning: assignment makes pointer from integer without a cast parse.y:1852: warning: assignment makes pointer from integer without a cast parse.y:1859: warning: implicit declaration of function `build_pascal_range_type ' parse.y:1859: warning: assignment makes pointer from integer without a cast parse.y:1870: warning: assignment makes pointer from integer without a cast parse.y:1871: warning: assignment makes pointer from integer without a cast parse.y:1878: warning: implicit declaration of function `grok_packed' parse.y:1878: warning: assignment makes pointer from integer without a cast parse.y:1897: warning: implicit declaration of function `build_pascal_pointer_ty pe' parse.y:1897: warning: assignment makes pointer from integer without a cast parse.y:2007: `string_schema_proto_type' undeclared (first use this function) parse.y:2045: warning: unused variable `size' parse.y:2087: warning: assignment makes pointer from integer without a cast parse.y:2104: warning: implicit declaration of function `check_object_pointer' parse.y:2124: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:2135: warning: implicit declaration of function `build_pascal_array_type ' parse.y:2135: warning: assignment makes pointer from integer without a cast parse.y:2176: warning: implicit declaration of function `convert_type_to_range' parse.y:2176: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:2178: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:2184: warning: implicit declaration of function `build_file_type' parse.y:2184: warning: assignment makes pointer from integer without a cast parse.y:2203: warning: implicit declaration of function `build_set_type' parse.y:2203: warning: assignment makes pointer from integer without a cast parse.y:2199: warning: unused variable `range' parse.y:2211: warning: assignment makes pointer from integer without a cast parse.y:2299: warning: implicit declaration of function `p_grokfields' parse.y:2299: warning: assignment makes pointer from integer without a cast parse.y:2316: warning: implicit declaration of function `build_record_variant_pa rt' parse.y:2317: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:2425: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:2429: warning: passing arg 1 of `build_tree_list' makes pointer from int eger without a cast parse.y:2429: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:2460: warning: implicit declaration of function `store_object_name' parse.y:2461: warning: implicit declaration of function `add_vmt_field' parse.y:2462: warning: implicit declaration of function `construct_vmt' parse.y:2476: warning: implicit declaration of function `inherit' parse.y:2536: warning: implicit declaration of function `mark_virtual_method' parse.y:2536: warning: assignment makes pointer from integer without a cast parse.y:2545: warning: assignment makes pointer from integer without a cast parse.y:2564: warning: assignment makes pointer from integer without a cast parse.y:2578: warning: implicit declaration of function `get_method_name' parse.y:2579: warning: assignment makes pointer from integer without a cast parse.y:2601: warning: assignment makes pointer from integer without a cast parse.y:2665: `const_string_schema_proto_type' undeclared (first use this functi on) parse.y:2672: warning: assignment makes pointer from integer without a cast parse.y:2682: warning: passing arg 1 of `get_identifier' makes pointer from inte ger without a cast parse.y:2762: `extern_id' undeclared (first use this function) parse.y:2779: `static_id' undeclared (first use this function) parse.y:2781: `volatile_id' undeclared (first use this function) parse.y:2783: `attribute_id' undeclared (first use this function) parse.y:3102: warning: implicit declaration of function `name_exported_p' parse.y:3103: warning: implicit declaration of function `maybe_make_static' parse.y:3103: warning: assignment makes pointer from integer without a cast parse.y:3255: warning: assignment makes pointer from integer without a cast parse.y:3265: warning: passing arg 1 of `get_identifier' makes pointer from inte ger without a cast parse.y:3306: warning: passing arg 1 of `get_identifier' makes pointer from inte ger without a cast parse.y:3326: `inline_id' undeclared (first use this function) parse.y:3348: warning: assignment makes pointer from integer without a cast parse.y:3551: warning: implicit declaration of function `push_self_parameter' parse.y:3603: warning: implicit declaration of function `handle_formal_param_lis t' parse.y:3633: warning: implicit declaration of function `handle_formal_conf_arra y_param_list' parse.y:3722: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:3723: warning: assignment makes pointer from integer without a cast parse.y:3772: warning: implicit declaration of function `emit_nop' parse.y:3886: warning: implicit declaration of function `emit_line_note' parse.y:3916: warning: implicit declaration of function `warning_with_file_and_l ine' parse.y:3926: warning: passing arg 1 of `c_expand_start_case' makes pointer from integer without a cast parse.y:3952: warning: implicit declaration of function `error_with_decl' parse.y:4153: warning: implicit declaration of function `check_for_control_varia ble' parse.y:4158: warning: assignment makes pointer from integer without a cast parse.y:4163: warning: implicit declaration of function `get_unique_identifier' parse.y:4172: warning: passing arg 1 of `start_decl' makes pointer from integer without a cast parse.y:4197: warning: passing arg 1 of `start_decl' makes pointer from integer without a cast parse.y:4266: warning: implicit declaration of function `construct_set' parse.y:4266: warning: assignment makes pointer from integer without a cast parse.y:4300: warning: implicit declaration of function `make_new_variable' parse.y:4300: warning: assignment makes pointer from integer without a cast parse.y:4373: warning: implicit declaration of function `expand_computed_goto' parse.y:4393: warning: implicit declaration of function `suspend_function_calls' parse.y:4397: warning: implicit declaration of function `resume_function_calls' parse.y:4437: warning: implicit declaration of function `allow_function_calls' parse.y:4462: warning: implicit declaration of function `maybe_call_function' parse.y:4462: warning: assignment makes pointer from integer without a cast parse.y:4464: warning: implicit declaration of function `call_method' parse.y:4464: warning: assignment makes pointer from integer without a cast parse.y:4489: warning: passing arg 1 of `lookup_name' makes pointer from integer without a cast parse.y:4516: warning: passing arg 1 of `get_identifier' makes pointer from inte ger without a cast parse.y:4607: warning: assignment makes pointer from integer without a cast parse.y:4612: warning: implicit declaration of function `base_type' parse.y:4612: invalid type argument of `->' parse.y:4614: warning: assignment makes pointer from integer without a cast parse.y:4615: warning: implicit declaration of function `is_string_type' parse.y:4617: warning: implicit declaration of function `assign_string' parse.y:4645: `schema_id' undeclared (first use this function) parse.y:4699: warning: implicit declaration of function `build_rts_call' parse.y:5040: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:5044: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:5056: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:5065: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:5071: warning: passing arg 1 of `build_tree_list' makes pointer from int eger without a cast parse.y:5071: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:5076: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:5088: warning: passing arg 2 of `build_tree_list' makes pointer from int eger without a cast parse.y:5300: `string_id' undeclared (first use this function) parse.y:5360: warning: initialization makes pointer from integer without a cast parse.y:5473: warning: assignment makes pointer from integer without a cast parse.y:5475: warning: assignment makes pointer from integer without a cast parse.y:5486: warning: assignment makes pointer from integer without a cast parse.y:5501: warning: implicit declaration of function `get_standard_output' parse.y:5501: warning: assignment makes pointer from integer without a cast parse.y:5503: warning: implicit declaration of function `get_standard_input' parse.y:5503: warning: assignment makes pointer from integer without a cast parse.y:5510: warning: passing arg 1 of `get_identifier' makes pointer from inte ger without a cast parse.y:5523: warning: implicit declaration of function `is_schema_discriminant_ access' parse.y:5527: warning: assignment makes pointer from integer without a cast parse.y:5544: warning: assignment makes pointer from integer without a cast parse.y:5564: warning: implicit declaration of function `build_buffer_ref' parse.y:5564: warning: assignment makes pointer from integer without a cast parse.y:5575: `empty_arglist' undeclared (first use this function) parse.y:5575: warning: assignment makes pointer from integer without a cast parse.y:5596: warning: implicit declaration of function `build_pascal_array_ref' parse.y:5596: warning: assignment makes pointer from integer without a cast parse.y:5626: warning: assignment makes pointer from integer without a cast parse.y:5638: warning: passing arg 1 of `start_decl' makes pointer from integer without a cast parse.y:5646: warning: initialization makes pointer from integer without a cast parse.y:5662: warning: initialization makes pointer from integer without a cast parse.y:5687: warning: initialization makes pointer from integer without a cast parse.y:5697: warning: assignment makes pointer from integer without a cast parse.y:5720: warning: passing arg 1 of `get_identifier' makes pointer from inte ger without a cast parse.y:5744: warning: implicit declaration of function `build_set_constructor' parse.y:5744: warning: assignment makes pointer from integer without a cast parse.y:5773: warning: implicit declaration of function `construct_set_member' parse.y:5773: warning: assignment makes pointer from integer without a cast parse.y:5775: warning: assignment makes pointer from integer without a cast parse.y:5780: warning: assignment makes pointer from integer without a cast parse.y:5784: warning: assignment makes pointer from integer without a cast parse.y:5787: warning: assignment makes pointer from integer without a cast parse.y:5789: warning: assignment makes pointer from integer without a cast parse.y:6077: warning: implicit declaration of function `finalize_module' parse.y:6078: `NULL_MODULE' undeclared (first use this function) parse.y:6105: warning: implicit declaration of function `export_interface' parse.y:6110: warning: implicit declaration of function `module_repair_exported_ ranges' parse.y:6111: warning: implicit declaration of function `create_gpi_files' parse.y:6113: warning: implicit declaration of function `handle_pending_decls' parse.y:6134: warning: implicit declaration of function `create_gpm_file' parse.y:6161: warning: implicit declaration of function `load_gpm_file' parse.y:6235: `we_are_loading_a_gpi_file' undeclared (first use this function) parse.y:6275: warning: initialization makes pointer from integer without a cast parse.y:6277: warning: initialization makes pointer from integer without a cast parse.y:6329: warning: initialization makes pointer from integer without a cast parse.y:6331: warning: initialization makes pointer from integer without a cast parse.y:6376: warning: initialization makes pointer from integer without a cast parse.y:6378: warning: initialization makes pointer from integer without a cast parse.y:6477: warning: implicit declaration of function `module_export_range' parse.y:6477: warning: assignment makes pointer from integer without a cast parse.y:6479: warning: implicit declaration of function `module_export_clause' parse.y:6479: warning: assignment makes pointer from integer without a cast parse.y:6481: warning: assignment makes pointer from integer without a cast parse.y:6484: warning: assignment makes pointer from integer without a cast parse.y:6539: warning: implicit declaration of function `import_interface' make[1]: *** [parse.o] Error 1 make[1]: Leaving directory `/usr1/local/src/GNU/SOURCE/gcc-2.7.2.3/p' make: *** [gpc1] Error 2

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undeclared identifiers
by Tom Dye 12 Nov '97

12 Nov '97

Hello Peter, Thank you for helping so often and so well. With the code below gpc says I is an undeclared identifier and that the condition that I is part of must be of Boolean type. I've been through the examples in the Extended Pascal Standard to see if something is obviously wrong with the code, but didn't find anything there. Sorry if this is an obvious error in Extended Pascal. My Borland Pascal background leads me to believe that the code is OK, though. Is gpc not doing something right here? Tom Thomas S. Dye, Ph.D. Home: 813 16th Avenue, Honolulu, Hawaii 96816. Voice (808) 734-2087. Work: International Archaeological Research Institute, Inc., 949 McCully St., Suite 5, Honolulu, Hawaii 96826. Voice (808) 946-2548; Fax 943-0716. module charbug interface; export charbug = (IsAlphaNum); function IsAlphaNum (ch : char; i : integer) : boolean; end. module charbug implementation; function IsAlphaNum; begin if i > 2 then IsAlphaNum:= ch in ['A'..'Z','a'..'z','0'..'9']; end; end.

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Re: DPMI calls (Was: Re: Backflips, ...)...
by Frank Heckenbach 12 Nov '97

12 Nov '97

<Pine.3.89.9711111023.A17958-0100000@@bc> Orlando Llanes wrote: > <grin> I wish there was something that overlaps instead of it > increasing the size :-/ I guess the only way around it is Type-casting. Variant records are overlapping, as I said. Type-casting is another way, absolute variables are a third one (though I don't recommend it since it's IMHO quite unsafe)... > I mean does GPC add to the size of the record? Or are all the cases > one size? For example, in my SomeVar example, would GPC treat it as 4 > elements? Or 2? 2 elements (GPC and BP). -- Frank Heckenbach, Erlangen, Germany fjf(a)gmx.de http://home.pages.de/~fjf/links.htm

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Gpc November 1997