gcc-4.1 with patch from PR26208 doesn't support
unwinding through signal frames.
$ uname -a
SunOS hermes 5.9 Generic_117171-07 sun4u sparc SUNW,Sun-Blade-1500
$ ./u-sparc-sun-solaris2.9
boom!
10af4 signalHandler+0x1c
ff31f010 _setuid+0x68
alive!
$ ./u-sparc64-sun-solaris2.9
boom!
100000dac signalHandler+0x28
ffffffff7f1a7b58 _setuid+0x54
alive!
on x86 it works fine.
$ ./u-i486-gnu-linux
boom!
0x8048ac8 signalHandler+0x15
0xffffe500 __kernel_sigreturn+0x0
0x8048b0e zoo+0x34
0x8048b21 bar+0xb
0x8048b36 foo+0x13
0x8048b63 main+0x28
0x322de6 __libc_start_main+0xc6
alive!
$ ./u-x86_64-gnu-linux
boom!
0x400deb signalHandler+0x1a
0x400e26 zoo+0x2c
0x400e45 bar+0x17
0x400e55 foo+0xe
0x400e6f main+0x18
0x34cf71c4cc __libc_start_main+0xdc
alive!
--
Summary: problem with unwinding through signal frame.
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pluto at agmk dot net
GCC target triplet: sparc*-sun-solaris2.9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33743
