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Hi,

At Mon, 25 Jan 2010 10:30:30 +0900,
Alexander von Gluck wrote in [ruby-core:27768]:

signal.c: In function 'sigsegv':
signal.c:593: error: 'info' undeclared (first use in this function)
signal.c:593: error: (Each undeclared identifier is reported only once
signal.c:593: error: for each function it appears in.)
make: *** [signal.o] Error 1

It means sigaltstack() is found but SA_SIGINFO isn't. Haiku-OS
doesn't provide the flag? Or does it need another header?

--
Nobu Nakada

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@Yui

That patch definitely looks like it would resolve this issue. Since that info structure is a todo for the Haiku project the code should probably be left as-is until Haiku completes it.

Thanks!
-- Alex
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The patch suggested at http://znz.s1.xrea.com/t/?date=20090926 causes the bus error for me too and seems like an invalid work-around.

The overall solution for this issue is on Haiku's side and not Ruby's fault.
http://dev.haiku-os.org/ticket/2695

Until Haiku fixes this I'll just comment out the broken call which seems to work and make a miniruby that works :). Just a quick note that this patch may cause some bad mojo on a sigsegv and should not be used in production apps.

Index: signal.c¶

--- signal.c (revision 26395)
+++ signal.c (working copy)
@@ -34,7 +34,7 @@

define ATOMIC_DEC(var) (--(var))¶

#endif

-#ifdef BEOS
+#if defined(BEOS) || defined(HAIKU)
#undef SIGBUS
#endif

@@ -597,6 +597,7 @@
static RETSIGTYPE
sigsegv(int sig SIGINFO_ARG)
{
+/*
#ifdef USE_SIGALTSTACK
int ruby_stack_overflowed_p(const rb_thread_t *, const void *);
NORETURN(void ruby_thread_stack_overflow(rb_thread_t th));
@@ -605,6 +606,7 @@
ruby_thread_stack_overflow(th);
}
#endif
+/
if (segv_received) {
fprintf(stderr, "SEGV received in SEGV handler\n");
exit(EXIT_FAILURE);
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Looks like Nobuyoshi Nakada fixed this in r26399

logic: if no SIGSEGV info, don't USE_SIGALTSTACK

That should be generic, way to be smarter then the Operating system :)

can be closed.
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