[patch] [ia64] No start when GDB built with -lmcheck
Jan Kratochvil
jan.kratochvil@redhat.com
Sun Aug 16 21:19:00 GMT 2009
Hi,
build GDB with -lmcheck (valgrind would be similar) to get:
$ gdb -nx -ex r --args ./gdb -nx -ex r true
...
Program received signal SIGSEGV, Segmentation fault.
0x40000000002725c0 in init_regcache_descr (gdbarch=0x6000000000114660) at regcache.c:132
132 descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]);
(gdb) p i
$1 = 128
(gdb) p descr->register_type[i]
$2 = (struct type *) 0x9393939393939393
#0 ia64_ext_type (gdbarch=0x6000000000114660) at ia64-tdep.c:303
303 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
(gdb) n
305 if (!tdep->ia64_ext_type)
(gdb) p tdep->ia64_ext_type
$2 = (struct type *) 0x9393939393939393
(gdb) l
300 static struct type *
301 ia64_ext_type (struct gdbarch *gdbarch)
302 {
303 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
304
305 if (!tdep->ia64_ext_type)
306 tdep->ia64_ext_type
307 = arch_float_type (gdbarch, 128, "builtin_type_ia64_ext",
308 floatformats_ia64_ext);
309
The two conflictin lines:
commit c342e22343e36692fce21de338d3175cc33a3dc2
Author: Kevin Buettner <kevinb@redhat.com>
- tdep = xmalloc (sizeof (struct gdbarch_tdep));
commit ec51d99d066d5d460b4f1722d894deeb7b4963e9
Author: Ulrich Weigand <uweigand@de.ibm.com>
305 if (!tdep->ia64_ext_type)
Thanks,
Jan
gdb/
2009-08-16 Jan Kratochvil <jan.kratochvil@redhat.com>
Fix ia64 start crash when GDB built with -lmcheck.
* ia64-tdep.c (ia64_gdbarch_init): Allocate TDEP as cleared.
--- gdb/ia64-tdep.c 30 Jul 2009 16:29:53 -0000 1.195
+++ gdb/ia64-tdep.c 16 Aug 2009 18:30:21 -0000
@@ -3671,7 +3671,7 @@ ia64_gdbarch_init (struct gdbarch_info i
if (arches != NULL)
return arches->gdbarch;
- tdep = xmalloc (sizeof (struct gdbarch_tdep));
+ tdep = xzalloc (sizeof (struct gdbarch_tdep));
gdbarch = gdbarch_alloc (&info, tdep);
tdep->sigcontext_register_address = 0;
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