From 851d8814097fcfb795f05163cb41a55f9da422b4 Mon Sep 17 00:00:00 2001
From: YangKeao <yangkeao@chunibyo.icu>
Date: Thu, 19 Jan 2023 16:23:36 +0800
Subject: [PATCH] validate whether addr is null before constructing slice

Signed-off-by: YangKeao <yangkeao@chunibyo.icu>
---
 src/addr_validate.rs | 4 ++++
 src/collector.rs     | 2 +-
 src/report.rs        | 2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/addr_validate.rs b/src/addr_validate.rs
index 9e9a34c6..4dd894e8 100644
--- a/src/addr_validate.rs
+++ b/src/addr_validate.rs
@@ -59,6 +59,10 @@ fn open_pipe() -> nix::Result<()> {
 }
 
 pub fn validate(addr: *const libc::c_void) -> bool {
+    if addr.is_null() {
+        return false;
+    }
+
     const CHECK_LENGTH: usize = 2 * size_of::<*const libc::c_void>() / size_of::<u8>();
 
     // read data in the pipe
diff --git a/src/collector.rs b/src/collector.rs
index 41b34139..c05fb18b 100644
--- a/src/collector.rs
+++ b/src/collector.rs
@@ -37,7 +37,7 @@ pub struct Bucket<T: 'static> {
 
 impl<T: Eq + Default> Default for Bucket<T> {
     fn default() -> Bucket<T> {
-        let entries = Box::new(Default::default());
+        let entries = Box::default();
 
         Self { length: 0, entries }
     }
diff --git a/src/report.rs b/src/report.rs
index 37b885a8..971cb8d6 100644
--- a/src/report.rs
+++ b/src/report.rs
@@ -229,7 +229,7 @@ mod protobuf {
         /// `pprof` will generate google's pprof format report.
         pub fn pprof(&self) -> crate::Result<protos::Profile> {
             let mut dedup_str = HashSet::new();
-            for key in self.data.iter().map(|(key, _)| key) {
+            for key in self.data.keys() {
                 dedup_str.insert(key.thread_name_or_id());
                 for frame in key.frames.iter() {
                     for symbol in frame {