fix tests by removing unnecessary check on first stack entry

error_test.go

@@ -247,7 +247,7 @@ func c() {
 
 // compareStacks will compare a stack created using the errors package (actual)
 // with a reference stack created with the callers function (expected). The
-// first entry is compared inexact since the actual and expected stacks cannot
+// first entry is not compared  since the actual and expected stacks cannot
 // be created at the exact same program counter position so the first entry
 // will always differ somewhat. Returns nil if the stacks are equal enough and
 // an error containing a detailed error message otherwise.
@@ -256,12 +256,7 @@ func compareStacks(actual, expected []uintptr) error {
 		return stackCompareError("Stacks does not have equal length", actual, expected)
 	}
 	for i, pc := range actual {
-		if i == 0 {
-			firstEntryDiff := (int)(expected[i]) - (int)(pc)
-			if firstEntryDiff < -27 || firstEntryDiff > 27 {
-				return stackCompareError(fmt.Sprintf("First entry PC diff to large (%d)", firstEntryDiff), actual, expected)
-			}
-		} else if pc != expected[i] {
+		if i != 0 && pc != expected[i] {
 			return stackCompareError(fmt.Sprintf("Stacks does not match entry %d (and maybe others)", i), actual, expected)
 		}
 	}