------- Comment #3 from rguenth at gcc dot gnu dot org 2009-07-17 15:40 -------
confvar.i:
struct variable {
const char *string;
};
struct variable table[] = { };
getconf.i:
struct variable {
const char *string;
};
extern struct variable table[];
int main(int argc, char *argv[])
{
struct variable *p;
for(p = table; p->string; p++)
;
}
> ./xgcc -B. confvar.3.i getconf.3.i -flto -O
In function 'main':
lto1: error: address taken, but ADDRESSABLE bit not set
PHI argument
&table[0];
for PHI node
p_1 = PHI <&table[0](2), p_4(3)>
lto1: internal compiler error: verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
as table is a global variable this is likely just a verifier issue - the
TREE_ADDRESSABLE state of non-static variables is not relevant (still it
seems it's not properly merged). With -fwhole-program table should be
promoted to static, thus TREE_ADDRESSABLE should be merged here.
Like the following, which fixes the testcase:
Index: lto-symtab.c
===================================================================
--- lto-symtab.c (revision 149739)
+++ lto-symtab.c (working copy)
@@ -572,6 +572,9 @@ lto_symtab_merge_decl (tree new_decl,
if (!lto_symtab_compatible (old_decl, new_decl))
return;
+ /* Merge decl state. */
+ TREE_ADDRESSABLE (old_decl) |= TREE_ADDRESSABLE (new_decl);
+
old_resolution = lto_symtab_get_resolution (old_decl);
gcc_assert (resolution != LDPR_UNKNOWN
&& resolution != LDPR_UNDEF
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2009-07-15 15:15:34 |2009-07-17 15:40:25
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40765
