diff options
| author | Richard Stallman <rms@gnu.org> | 1992-11-25 17:33:21 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-11-25 17:33:21 +0000 |
| commit | 32436219b6f789d1400d15e1da117d741033bf2e (patch) | |
| tree | 59bfadcf80bb3f7ecbb9e9f4177389620ce7167d | |
| parent | 8adfad0f10f5c5c96a174c3ffb196e9c6a0b31d3 (diff) | |
| download | gcc-32436219b6f789d1400d15e1da117d741033bf2e.zip gcc-32436219b6f789d1400d15e1da117d741033bf2e.tar.gz gcc-32436219b6f789d1400d15e1da117d741033bf2e.tar.bz2 | |
(duplicate_decls): For builtins, create new function
type instead of trying to modify old one.
(c_decode_option): Decode -Wreturn-type.
From-SVN: r2794
| -rw-r--r-- | gcc/c-decl.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c index 5f5a191..7c7cab7 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -1305,10 +1305,15 @@ duplicate_decls (newdecl, olddecl) tree newreturntype = TREE_TYPE (TREE_TYPE (newdecl)); if (TYPE_MODE (oldreturntype) == TYPE_MODE (newreturntype)) { - TREE_TYPE (TREE_TYPE (olddecl)) = newreturntype; - types_match = comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl)); - if (!types_match) - TREE_TYPE (TREE_TYPE (olddecl)) = oldreturntype; + /* Function types may be shared, so we can't just modify + the return type of olddecl's function type. */ + tree newtype + = build_function_type (newreturntype, + TYPE_ARG_TYPES (TREE_TYPE (olddecl))); + + types_match = comptypes (TREE_TYPE (newdecl), newtype); + if (types_match) + TREE_TYPE (olddecl) = newtype; } } if (!types_match) |