diff options
Diffstat (limited to 'gcc/warning-control.cc')
| -rw-r--r-- | gcc/warning-control.cc | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/warning-control.cc b/gcc/warning-control.cc index 0cbb4f0..7e9e701 100644 --- a/gcc/warning-control.cc +++ b/gcc/warning-control.cc @@ -191,7 +191,7 @@ void copy_warning (ToType to, FromType from) { const location_t to_loc = get_location (to); - bool supp = get_no_warning_bit (from); + const bool supp = get_no_warning_bit (from); nowarn_spec_t *from_spec = get_nowarn_spec (from); if (RESERVED_LOCATION_P (to_loc)) @@ -209,7 +209,7 @@ void copy_warning (ToType to, FromType from) nowarn_spec_t tem = *from_spec; nowarn_map->put (to_loc, tem); } - else + else if (supp) { if (nowarn_map) nowarn_map->remove (to_loc); @@ -226,6 +226,8 @@ void copy_warning (ToType to, FromType from) void copy_warning (tree to, const_tree from) { + if (to == from) + return; copy_warning<tree, const_tree>(to, from); } @@ -250,5 +252,7 @@ copy_warning (gimple *to, const_tree from) void copy_warning (gimple *to, const gimple *from) { + if (to == from) + return; copy_warning<gimple *, const gimple *>(to, from); } |