Between 20100628 and 20100705, all Objective-C execution tests started to fail
on
Solaris 2/SPARC. E.g,
FAIL: objc.dg/bitfield-1.m -fgnu-runtime execution test
bitfield-1.exe SEGVs with this stacktrace:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
sel_get_name (selector=0x0) at
/vol/gcc/src/hg/trunk/solaris/libobjc/selector.c:299
(gdb) where
#0 sel_get_name (selector=0x0) at
/vol/gcc/src/hg/trunk/solaris/libobjc/selector.c:299
#1 0xfeb7e8a0 in -[Object notImplemented:] (self=0x20eb4, _cmd=0xfeb97c5c,
aSel=0x0) at /vol/gcc/src/hg/trunk/solaris/libobjc/Object.m:306
#2 0xfeb7e420 in +[Object conformsTo:] (self=<value optimized out>,
_cmd=<value optimized out>, aProtocol=0xfea35800) at
/vol/gcc/src/hg/trunk/solaris/libobjc/Object.m:213
#3 0x00010af4 in main ()
The selector argument to sel_get_name is NULL, so a NULL pointer is
dereferenced.
Unless there is a generic code generation bug here, I strongly suspect this
patch:
2010-07-03 Nathan Froyd <froy...@codesourcery.com>
PR objc/24867
* objc-act.c (build_sized_array_type): New function.
(add_objc_string): Use it.
(generate_protocol_list): Likewise.
(generate_objc_image_info): Likewise.
(add_field_decl): New function.
(objc_build_struct): Use a VEC rather than building a TREE_LIST.
(generate_struct_by_value_array): Use add_field_decl.
(build_objc_symtab_template): Likewise.
(build_module_descriptor): Likewise.
(build_objc_exception_stuff): Likewise.
(build_protocol_template): Likewise.
(build_method_prototype_list_template): Likewise.
(build_method_prototype_template): Likewise.
(build_category_template): Likewise.
(build_selector_template): Likewise.
(build_class_template): Likewise.
(build_super_template): Likewise.
(build_ivar_template): Likewise.
(build_ivar_list_template): Likewise.
(build_method_list_template): Likewise.
--
Summary: [4.6 regression] All Objective-C execution tests fail on
Solaris 2/SPARC
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: objc
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ro at gcc dot gnu dot org
GCC build triplet: sparc-sun-solaris2*
GCC host triplet: sparc-sun-solaris2*
GCC target triplet: sparc-sun-solaris2*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887
