>Number:         18113
>Category:       port-alpha
>Synopsis:       unaligned access + segfault when compiling setjmp() with -pg on alpha
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    port-alpha-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 29 23:58:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     B. James Phillippe
>Release:        NetBSD 1.5.4_ALPHA
>Organization:
-bp
--
# bryan_at_darkforest_dot_org
# Software Engineer
>Environment:
System: NetBSD jupiter 1.5.4_ALPHA NetBSD 1.5.4_ALPHA (Jupiter 20020825) #5: Sun Aug 25 15:50:04 PDT 2002 bryan@jupiter:/usr/src/1.5/src/sys/arch/alpha/compile/jupiter alpha
Architecture: alpha
Machine: alpha
>Description:
	Applications which make use of setjmp()/longjmp() cannot be
	compiled with profiling (-pg) because they crash with an
	unaligned access on entry of setjmp().  First observed this
	in 1.5.2, am currently running clean 1.5.3 (with 1.5.4_ALPHA
	kernel sources).
>How-To-Repeat:
/* Compile with: gcc -pg */
#include <setjmp.h>

jmp_buf env;

int foo(void)
{
    int val;

    if ((val = setjmp(env)) != 0) {    /* <------ boom */
        return val;
    }

    longjmp(env, 1);

    return val;
}

int main(int argc, char *argv[])
{
    foo();

    return 0;
}
>Fix:
	Poked around a little bit, but it's beyond me.
>Release-Note:
>Audit-Trail:
>Unformatted: