diff options
Diffstat (limited to 'compiler/sighashes.nim')
| -rw-r--r-- | compiler/sighashes.nim | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/compiler/sighashes.nim b/compiler/sighashes.nim index 218011b1d..3096d94a0 100644 --- a/compiler/sighashes.nim +++ b/compiler/sighashes.nim @@ -196,18 +196,23 @@ proc hashType(c: var MD5Context, t: PType; flags: set[ConsiderFlag]) = else: c.hashSym(t.sym) if {sfAnon, sfGenSym} * t.sym.flags != {}: - # generated object names can be identical, so we need to - # disambiguate furthermore by hashing the field types and names: - # mild hack to prevent endless recursions (makes nimforum compile again): - let oldFlags = t.sym.flags - t.sym.flags = t.sym.flags - {sfAnon, sfGenSym} - let n = t.n - for i in 0 ..< n.len: - assert n[i].kind == nkSym - let s = n[i].sym - c.hashSym s - c.hashType s.typ, flags - t.sym.flags = oldFlags + # Generated object names can be identical, so we need to + # disambiguate furthermore by hashing the field types and names. + if t.n.len > 0: + let oldFlags = t.sym.flags + # Mild hack to prevent endless recursion. + t.sym.flags = t.sym.flags - {sfAnon, sfGenSym} + for n in t.n: + assert(n.kind == nkSym) + let s = n.sym + c.hashSym s + c.hashType s.typ, flags + t.sym.flags = oldFlags + else: + # The object has no fields: we _must_ add something here in order to + # make the hash different from the one we produce by hashing only the + # type name. + c &= ".empty" else: c &= t.id if t.len > 0 and t.sons[0] != nil: |