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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2018-08-17 10:58:05 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavierleroy@users.noreply.github.com> | 2018-08-17 14:01:08 +0200 |
| commit | 3bf5dcea0935b280189d04c34e84e46fb07f87e7 (patch) | |
| tree | ccac207ac2a271e3f2e95298cad85504e28a02f4 | |
| parent | 999bea31a252dae1b0709166cf3c9540bda9dbb0 (diff) | |
| download | compcert-kvx-3bf5dcea0935b280189d04c34e84e46fb07f87e7.tar.gz compcert-kvx-3bf5dcea0935b280189d04c34e84e46fb07f87e7.zip | |
Check for bit-fields in __builtin_offsetof
__builtin_offsetof(struct s, f) is an error if f is a bit-field.
| -rw-r--r-- | cparser/Elab.ml | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/cparser/Elab.ml b/cparser/Elab.ml index 5f785c04..668b65d8 100644 --- a/cparser/Elab.ml +++ b/cparser/Elab.ml @@ -1839,7 +1839,10 @@ let elab_expr ctx loc env a = | _ -> fatal_error "request for member '%s' in something not a structure or union" mem in let rec offset_of_list acc env ty = function | [] -> acc,ty - | fld::rest -> let off = offsetof env ty fld in + | fld::rest -> + if fld.fld_bitfield <> None then + error "cannot compute offset of bit-field '%s'" fld.fld_name; + let off = offsetof env ty fld in offset_of_list (acc+off) env fld.fld_typ rest in let offset_of_member (env,off_accu,ty) mem = match mem,unroll env ty with |