[Bug tree-optimization/83233] New: [8 Regression] gimple-ssa-store-merging.c:183:3: warning: unnamed type with no linkage used to declare variable with linkage

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83233

            Bug ID: 83233
           Summary: [8 Regression] gimple-ssa-store-merging.c:183:3:
                    warning: unnamed type with no linkage used to declare
                    variable with linkage
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---

In stage 1 with -std=gnu++98:

../../gcc/gcc/gimple-ssa-store-merging.c:183:3: warning: unnamed type with no
linkage used to declare variable ‘{anonymous}::<unnamed struct>
{anonymous}::nop_stats’ with linkage
 } nop_stats, bswap_stats;
   ^~~~~~~~~
../../gcc/gcc/gimple-ssa-store-merging.c:183:14: warning: unnamed type with no
linkage used to declare variable ‘{anonymous}::<unnamed struct>
{anonymous}::bswap_stats’ with linka
ge
 } nop_stats, bswap_stats;
              ^~~~~~~~~~~
Could be fixed by using idiomatic C++, instead of

namespace {
struct
{
...
} nop_stats, bswap_stats;
}

something like:

namespace {
struct Stats
{
...
};
Stats nop_stats, bswap_stats;
}