Hi,
the problematic line is:
label_name = (*targetm.strip_name_encoding) (ggc_strdup (buf));
On AIX, rs6000_xcoff_strip_name_encoding can return NAME + 1:
static const char *
rs6000_xcoff_strip_name_encoding (const char *name)
{
size_t len;
if (*name == '*')
name++;
len = strlen (name);
if (name[len - 1] == ']')
return ggc_alloc_string (name, len - 4);
else
return name;
}
which means that you can have (ADDR + 1) in some GC tree and gt_ggc_m_S choke:
if (offset)
{
/* Here we've seen a char* which does not point to the beginning
of an allocated object. We assume it points to the middle of
a STRING_CST. */
gcc_assert (offset == offsetof (struct tree_string, str));
p = ((const char *) p) - offset;
gt_ggc_mx_lang_tree_node (CONST_CAST (void *, p));
return;
}
Tested on AIX, OK for the mainline?
2011-03-24 Eric Botcazou
* config/rs6000/rs6000.c (output_profile_hook): Fix thinko.
--
Eric Botcazou
Index: config/rs6000/rs6000.c
===
--- config/rs6000/rs6000.c (revision 171345)
+++ config/rs6000/rs6000.c (working copy)
@@ -23002,7 +23002,7 @@ output_profile_hook (int labelno ATTRIBU
rtx fun;
ASM_GENERATE_INTERNAL_LABEL (buf, "LP", labelno);
- label_name = (*targetm.strip_name_encoding) (ggc_strdup (buf));
+ label_name = ggc_strdup ((*targetm.strip_name_encoding) (buf));
fun = gen_rtx_SYMBOL_REF (Pmode, label_name);
emit_library_call (init_one_libfunc (RS6000_MCOUNT),
