[Bug c++/9335] repeated diagnostic when maximum template depth is exceeded

["jason at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

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------- Comment #18 from jason at gcc dot gnu dot org  2010-04-17 03:53 -------
The output with my patch is

wa.C:2:38: error: template instantiation depth exceeds maximum of 1024 (use
-ftemplate-depth= to increase the maximum) instantiating ‘struct
X<-0x000000018>’
wa.C:2:38:   instantiated from ‘const int X<-0x000000017>::value’
wa.C:2:38:   instantiated from ‘const int X<-0x000000016>::value’
wa.C:2:38:   instantiated from ‘const int X<-0x000000015>::value’
wa.C:2:38:   instantiated from ‘const int X<-0x000000014>::value’
wa.C:2:38:   instantiated from ‘const int X<-0x000000013>::value’
wa.C:2:38:   [ skipping 1014 instantiation contexts ]
wa.C:2:38:   instantiated from ‘const int X<996>::value’
wa.C:2:38:   instantiated from ‘const int X<997>::value’
wa.C:2:38:   instantiated from ‘const int X<998>::value’
wa.C:2:38:   instantiated from ‘const int X<999>::value’
wa.C:2:38:   instantiated from ‘const int X<1000>::value’
wa.C:4:17:   instantiated from here

wa.C:2:38: error: incomplete type ‘X<-0x000000018>’ used in nested name
specifier

it avoids the error cascade by avoiding all the non-constant initializer
errors.

I guess your patch just cuts down the "instantiated from" list to one element? 
I think the previous change to skip all but 10 is good enough.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9335