------- Comment #13 from manu at gcc dot gnu dot org 2010-04-13 23:48 -------
I have a patch that prints this:
/home/manuel/src/pr9335.C:2:36: error: template instantiation depth exceeds
maximum of 1024 (use -ftemplate-depth= to increase the maximum) instantiating
struct X<-0x00000000000000018>
/home/manuel/src/pr9335.C:2:36: recursively instantiated from const int
X<1000>::value
/home/manuel/src/pr9335.C:4:17: instantiated from here
/home/manuel/src/pr9335.C:2:36: error: incomplete type
X<-0x00000000000000018> used in nested name specifier
/home/manuel/src/pr9335.C: In instantiation of const int
X<-0x00000000000000016>::value:
/home/manuel/src/pr9335.C:2:36: recursively instantiated from const int
X<1000>::value
/home/manuel/src/pr9335.C:4:17: instantiated from here
/home/manuel/src/pr9335.C:2:36: error: X<-0x00000000000000016>::value cannot
be initialized by a non-constant expression when being declared
/home/manuel/src/pr9335.C: In instantiation of const int
X<-0x00000000000000015>::value:
/home/manuel/src/pr9335.C:2:36: recursively instantiated from const int
X<1000>::value
/home/manuel/src/pr9335.C:4:17: instantiated from here
/home/manuel/src/pr9335.C:2:36: error: X<-0x00000000000000015>::value cannot
be initialized by a non-constant expression when being declared
/home/manuel/src/pr9335.C: In instantiation of const int
X<-0x00000000000000014>::value:
/home/manuel/src/pr9335.C:2:36: recursively instantiated from const int
X<1000>::value
/home/manuel/src/pr9335.C:4:17: instantiated from here
then continues for 4000 lines
It is perhaps an improvement but not a fix.
@Jason,
I see that in pt.c (instantiate_decl), after we get the first error, then init
== error_mark_node. However, the parser continues building the declaration as
if nothing. And we end up with something like:
<var_decl 0x7ffff717bf00 value
type <integer_type 0x7ffff7490f18 int readonly type_6 SI
size <integer_cst 0x7ffff754d960 constant 32>
unit size <integer_cst 0x7ffff754d668 constant 4>
align 32 symtab 0 alias set -1 canonical type 0x7ffff7490f18 precision
32 min <integer_cst 0x7ffff754d8e8 -2147483648> max <integer_cst 0x7ffff754d910
2147483647\
>>
readonly constant used public static tree_1 tree_2 tree_3 external nonlocal
decl_3 decl_6 SI file /home/manuel/src/pr9335.C line 2 col 36 size <integer_cst
0x7ffff75\
4d960 32> unit size <integer_cst 0x7ffff754d668 4>
align 32 context <record_type 0x7ffff717ddc8 X> initial <error_mark
0x7ffff7555ca8>
template-info 0x7ffff7177600 chain <type_decl 0x7ffff717e8a0 X>>
Couldn't we abort all this earlier?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9335
