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3041 discussions

Re: Calendar.Month / Calendar.Hour
by Marc Dirix 07 Apr '11

07 Apr '11

I need to calculate a time based on the number of minutes since the start of the month, or since the start of the day. Calendar.Day()+Calendar.Minute()*x always worked fine, but Calendar.Month() + Calendar.Minute()* doesn't. But probably I have to revise the code to use beginning() everywhere, also for Calendar.Day(). /Marc

2 1

Re: Calendar.Month / Calendar.Hour
by Marc Dirix 07 Apr '11

07 Apr '11

Ow, my mistake. You're right.

1 0

forced cleanup-on-exit
by Arne Goedeke 02 Apr '11

02 Apr '11

I am currently writing a cmod for some obscure piece of hardware. Its driver tends to generate kernel panics if some deinitialization does not happen. It would therefore be nice if it was somehow possible to force the destruction of certain objects on exit, even without --with-cleanup-on-exit. Is there a possibility for that? And no, I cannot fix the kernel driver ;-)

3 4

32 bit abi crashes on darwin
by H. William Welliver III 01 Apr '11

01 Apr '11

I just tried to compile 7.8.352 on a new core i7 box running OSX 10.6 using 32-bit abi and the build fails because the pike generated crashes somewhere in the machine code generation. I compiled using the following command line: make CONFIGUREARGS="--with-abi=32" The backtrace looks like this: Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x0000004f 0x000c0227 in ia32_flush_instruction_cache (start=<value temporarily unavailable, due to optimizations>, len=55) at ia32.c:1047 1047 __asm__ __volatile__(".byte 0x0f\n" (gdb) bt #0 0x000c0227 in ia32_flush_instruction_cache (start=<value temporarily unavailable, due to optimizations>, len=55) at ia32.c:1047 #1 0x0012e61e in eval_low (n=0x838d78, print_error=1) at /Users/hww3/Downloads/Pike-v7.8.352/src/las.c:5241 #2 0x0000b48b in yyparse () at language.yacc:660 #3 0x000ee199 in f_compilation_compile (args=0) at /Users/hww3/Downloads/Pike-v7.8.352/src/program.c:8213 #4 0x0001697b in low_mega_apply (type=APPLY_LOW, args=0, arg1=0x831fb4, arg2=0x1) at apply_low.h:226 #5 0x000181cc in mega_apply (type=APPLY_LOW, args=0, arg1=0x831fb4, arg2=0x1) at /Users/hww3/Downloads/Pike-v7.8.352/src/interpret.c:2211 #6 0x000185b0 in apply (o=0x831fb4, fun=0x1ecfbf "compile", args=0) at /Users/hww3/Downloads/Pike-v7.8.352/src/interpret.c:2604 #7 0x000d939f in f_compilation_env_compile (args=1) at /Users/hww3/Downloads/Pike-v7.8.352/src/program.c:7828 #8 0x0001697b in low_mega_apply (type=APPLY_LOW, args=1, arg1=0x831fdc, arg2=0x1) at apply_low.h:226 #9 0x000181cc in mega_apply (type=APPLY_LOW, args=1, arg1=0x831fdc, arg2=0x1) at /Users/hww3/Downloads/Pike-v7.8.352/src/interpret.c:2211 #10 0x00145d5c in f_compile (args=1) at /Users/hww3/Downloads/Pike-v7.8.352/src/builtin_functions.c:4229 #11 0x000c83ae in get_master () at /Users/hww3/Downloads/Pike-v7.8.352/src/object.c:643 #12 0x000c85bb in debug_master () at /Users/hww3/Downloads/Pike-v7.8.352/src/object.c:689 #13 0x000b61cc in load_pike_master () at /Users/hww3/Downloads/Pike-v7.8.352/src/pike_embed.c:468 #14 0x000022e8 in main (argc=1, argv=0xbffff804) at /Users/hww3/Downloads/Pike-v7.8.352/src/main.c:629 Of course, things work fine using 64 bit ABIs, but I have a need to use some libraries that are 32 bit only, which of course makes everything more complicated. I'm going to assume that it's not something I've done wrong, but please do let me know if my assumption is incorrect :) Thanks in advance, Bill

5 6

float hashing
by Arne Goedeke 31 Mar '11

31 Mar '11

There is a problem with the hash function currently used for floats. It multiplies by some number and casts the result to an UINT32. This will lead to many floats having the same hash value 0. Especially bad case: hash_values(random(Float.MAX)) Also from those results I would say that random is broken for floats. It will always produce values lying within a few orders of magnitues in the above case. There is many options for good hash functions for floats/ints. Any preferences? arne

4 22

Cannot delete branches
by Martin Stjernholm, Roxen IS ＠ Pike developers forum 19 Mar '11

19 Mar '11

I just created a branch with a "mast/" prefix in the pike git, and then I changed my mind and tried to remove it again, but that's denied by the pre-receive hook: > git push origin :mast/precompiler-trouble remote: fatal: Not a valid commit name 0000000000000000000000000000000000000000 remote: git exited with code 128 To git-pike@pike-git.lysator.liu.se:pike.git ! [remote rejected] mast/precompiler-trouble (pre-receive hook declined) error: failed to push some refs to 'git-pike@pike-git.lysator.liu.se:pike.git' This is not intended, right?

2 4

Pike 7.6 in Debian
by Magnus Holmgren, Millnet/Lysator/Debian/Mensa ＠ Pike developers forum 19 Mar '11

19 Mar '11

With Squeeze released I think it's time to drop pike7.6 and focus on newer versions. Anyone against?

3 2

RCSID
by Martin Stjernholm, Roxen IS ＠ Pike developers forum 12 Mar '11

12 Mar '11

Regarding 2e50900, I don't see why rcsid would be significantly less useful in git than in rcs or cvs. Granted, one would have to run a few git commands on the hashes to make sense of them. Not that I object to RCSID's getting removed; I've never had any use for them in any case.

2 3

String.Buffer
by Martin Nilsson (Opera Mini - AFK!) ＠ Pike (-) developers forum 12 Mar '11

12 Mar '11

Can we get a sprintf method into the String.Buffer object? It doesn't look that difficult as low_pike_sprintf takes a string builder struct. I got lost in the type system and dynamic loading in my try though...

1 0

externs
by Martin Stjernholm, Roxen IS ＠ Pike developers forum 10 Mar '11

10 Mar '11

Tried out mixins with externs, which I didn't really knew existed. Consider: class A { int i; void sa (int n) {i = n;} } class B { extern int i; void sb (int n) {i = n;} } class C { inherit A; inherit B; void sa2 (int n) {A::i = n;} void sb2 (int n) {B::i = n;} void w() {werror ("C %O %O\n", A::i, B::i);} } extern variables seem to work alright in that both sa() and sb() assign the same storage. However, what I find surprising is that B::i seems to access a different location in sb2() and w(). Reading it produces 0, regardless what A::i is set to, and trying to set it results in a runtime error. I expected B::i to be an alias for A::i in all respects in C.

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