build out test a bit more

Author: vilterp

stdlib/AllocProfile/src/AllocProfile.jl

@@ -42,10 +42,10 @@ end
 
 function stop()
     raw_results = ccall(:jl_stop_alloc_profile, RawAllocResults, ())
-    # decoded_results = GC.@preserve raw_results decode(raw_results)
-    # ccall(:jl_free_alloc_profile, Cvoid, ())
-    # return decoded_results
-    return raw_results
+    decoded_results = decode(raw_results)
+    ccall(:jl_free_alloc_profile, Cvoid, ())
+    return decoded_results
+    # return raw_results
 end
 
 # decoded results
@@ -65,7 +65,7 @@ const BacktraceEntry = Union{Ptr{Cvoid}, InterpreterIP}
 const BacktraceCache = Dict{BacktraceEntry,Vector{StackFrame}}
 
 # loading anything below this seems to segfault
-# TODO: find out what's going on
+# TODO: use filter out special types before we get here
 TYPE_PTR_THRESHOLD = 0x0000000100000000
 
 function load_type(ptr::Ptr{Type})::Type

stdlib/AllocProfile/test/runtests.jl

@@ -11,8 +11,11 @@ using AllocProfile
     # test the allocations during compilation
     using Base64
 
-    raw_results = AllocProfile.stop()
-    results = AllocProfile.decode(raw_results)
+    results = AllocProfile.stop()
 
     @test length(results.allocs) > 0
+    first_alloc = results.allocs[1]
+    @test first_alloc.size > 0
+    @test length(first_alloc.stacktrace) > 0
+    @test length(string(first_alloc.type)) > 0
 end