fixes a critical --gc:boehm regression

2 files changed, 7 insertions, 5 deletions

diff --git a/compiler/ccgexprs.nim b/compiler/ccgexprs.nim
index 253c67b24..fa3a1fb86 100644
--- a/compiler/ccgexprs.nim
+++ b/compiler/ccgexprs.nim
@@ -1193,6 +1193,8 @@ proc genDefault(p: BProc; n: PNode; d: var TLoc) =
   if d.k == locNone: getTemp(p, n.typ, d, needsInit=true)
   else: resetLoc(p, d)
 
+proc trivialDestructor(s: PSym): bool {.inline.} = s.ast[bodyPos].len == 0
+
 proc rawGenNew(p: BProc, a: TLoc, sizeExpr: Rope) =
   var sizeExpr = sizeExpr
   let typ = a.t
@@ -1210,7 +1212,7 @@ proc rawGenNew(p: BProc, a: TLoc, sizeExpr: Rope) =
     genAssignment(p, a, b, {})
   else:
     let ti = genTypeInfo(p.module, typ, a.lode.info)
-    if bt.destructor != nil:
+    if bt.destructor != nil and not trivialDestructor(bt.destructor):
       # the prototype of a destructor is ``=destroy(x: var T)`` and that of a
       # finalizer is: ``proc (x: ref T) {.nimcall.}``. We need to check the calling
       # convention at least:
diff --git a/lib/system/mmdisp.nim b/lib/system/mmdisp.nim
index 47bb400a7..0d1bb1767 100644
--- a/lib/system/mmdisp.nim
+++ b/lib/system/mmdisp.nim
@@ -112,8 +112,8 @@ when defined(boehmgc):
       if result == nil: raiseOutOfMem()
     proc alloc0(size: Natural): pointer =
       result = alloc(size)
-    proc realloc(p: pointer, newsize: Natural): pointer =
-      result = boehmRealloc(p, newsize)
+    proc realloc(p: pointer, newSize: Natural): pointer =
+      result = boehmRealloc(p, newSize)
       if result == nil: raiseOutOfMem()
     proc dealloc(p: pointer) = boehmDealloc(p)
 
@@ -122,8 +122,8 @@ when defined(boehmgc):
       if result == nil: raiseOutOfMem()
     proc allocShared0(size: Natural): pointer =
       result = allocShared(size)
-    proc reallocShared(p: pointer, newsize: Natural): pointer =
-      result = boehmRealloc(p, newsize)
+    proc reallocShared(p: pointer, newSize: Natural): pointer =
+      result = boehmRealloc(p, newSize)
       if result == nil: raiseOutOfMem()
     proc deallocShared(p: pointer) = boehmDealloc(p)