https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108956
Bug ID: 108956
Summary: [13 regression] SEGV in M2RTS_RegisterModule
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: modula2
Assignee: gaius at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Host: sparc-sun-solaris2.11
Target: sparc-sun-solaris2.11
Build: sparc-sun-solaris2.11
Between 20230224 (0ccfa3884f638816af0f5a3f0ee2695e0771ef6d) and 20230227
(dfa85beebfbc2f879d30d3918f634feabc851782),
32-bit Solaris/SPARC bootstrap failed in stage 2:
m2/pge -k -l /vol/gcc/src/hg/master/local/gcc/m2/gm2-compiler/P2Build.bnf -o
m2/gm2-compiler-boot/P2Build.mod
make[3]: *** [/vol/gcc/src/hg/master/local/gcc/m2/Make-lang.in:1629:
m2/gm2-compiler-boot/P2Build.mod] Segmentation Fault
P3Build.mod is likewise affected.
gdb shows
Thread 2 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
0x00034d24 in M2RTS_RegisterModule (name=0x25c98,
libname=0x4dd24 <_M2_UnixArgs_init(int, char**, char**)>, init=...,
fini=..., dependencies=...)
at /vol/gcc/src/hg/master/local/gcc/m2/pge-boot/GM2RTS.c:464
464 {
1: x/i $pc
=> 0x34d24 <M2RTS_RegisterModule(void*, void*, M2RTS_ArgCVEnvP,
M2RTS_ArgCVEnvP, PROC)+40>: ld [ %i5 ], %g1
(gdb) p/x $i5
$1 = 0x2944
(gdb) bt
#0 0x00034d24 in M2RTS_RegisterModule (name=0x25c98,
libname=0x4dd24 <_M2_UnixArgs_init(int, char**, char**)>, init=...,
fini=..., dependencies=...)
at /vol/gcc/src/hg/master/local/gcc/m2/pge-boot/GM2RTS.c:464
#1 0x0004ddcc in _M2_UnixArgs_ctor::_M2_UnixArgs_ctor (
this=0x83958 <_M2_UnixArgs_ctor>)
at /vol/gcc/src/hg/master/local/gcc/m2/pge-boot/GUnixArgs.cc:89
#2 0x0004ddec in __static_initialization_and_destruction_0 ()
at /vol/gcc/src/hg/master/local/gcc/m2/pge-boot/GUnixArgs.cc:85
#3 0x0004de04 in _GLOBAL__sub_I_UnixArgs_GetArgC ()
at /vol/gcc/src/hg/master/local/gcc/m2/pge-boot/GUnixArgs.cc:91
#4 0xff1b2b48 in call_array () from /usr/lib/ld.so.1
#5 0xff1b2cd8 in call_init () from /usr/lib/ld.so.1
#6 0xff1b1fb4 in setup () from /usr/lib/ld.so.1
#7 0xff1c42ec in _setup () from /usr/lib/ld.so.1
#8 0xff1a44c0 in _rt_boot () from /usr/lib/ld.so.1
Address 0x2944 isn't mapped, thus the SEGV.
Apparently this is a caller/callee mismatch:
#0 0x00034d24 in M2RTS_RegisterModule (name=0x25c98,
libname=0x4dd24 <_M2_UnixArgs_init(int, char**, char**)>, init=...,
fini=..., dependencies=...)
at /vol/gcc/src/hg/master/local/gcc/m2/pge-boot/GM2RTS.c:464
464 {
(gdb) p dependencies
$4 = {proc = 0x0}
(gdb) up
#1 0x0004ddcc in _M2_UnixArgs_ctor::_M2_UnixArgs_ctor (
this=0x83958 <_M2_UnixArgs_ctor>)
at /vol/gcc/src/hg/master/local/gcc/m2/pge-boot/GUnixArgs.cc:89
89 M2RTS_RegisterModule ("UnixArgs", _M2_UnixArgs_init,
_M2_UnixArgs_fini,
(gdb) p _M2_UnixArgs_dep
$3 = {void (void)} 0x4dd8c <_M2_UnixArgs_dep()>
dependencies is of type PROC (i.e.struct { PROC_t proc; }) while
_M2_UnixArgs_dep is extern "C" void _M2_UnixArgs_dep (void).
This is almost certainly caused by
commit 05652ac4e8b8685fe0c0f4ee2f75516d28bbf892
Author: Gaius Mulley <gaiusm...@gmail.com>
Date: Sat Feb 25 16:28:19 2023 +0000
modula-2 module registration process seems to fail with shared libraries
[PR
108261]
64-bit Solaris/SPARC (sparcv9-sun-solaris2.11) isn't affected.
