From 5d11b57e5c1480ee6cfde8a69bd2e4309d002096 Mon Sep 17 00:00:00 2001
From: fanquake <fanquake@gmail.com>
Date: Sun, 9 May 2021 11:46:05 +0800
Subject: [PATCH] Merge bitcoin/bitcoin#21869: depends: Add missing
 -D_LIBCPP_DEBUG=1 to debug flags

fa9249aaccc3ef7a0a91a822e1cb666c4c9716ec depends: Add missing -D_LIBCPP_DEBUG=1 to debug flags (MarcoFalke)

Pull request description:

  Commands that can be used for testing:

  ```
  $ cat 1.cpp
  #include <vector>

  int main() {
    std::vector<int> foo;
    foo.begin() + 7;
  }
  ```

  ```
  clang++ -stdlib=libc++ -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC -D_LIBCPP_DEBUG=1 -Wall 1.cpp -o exe && ./exe
  g++                    -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC -D_LIBCPP_DEBUG=1 -Wall 1.cpp -o exe && ./exe

ACKs for top commit:
  practicalswift:
    cr ACK fa9249aaccc3ef7a0a91a822e1cb666c4c9716ec: patch looks correct
  fanquake:
    ACK fa9249aaccc3ef7a0a91a822e1cb666c4c9716ec - was going to suggest adding this to the macOS CPP flags as well, however it seems doing that is less straight forward. Could be looked at by someone in a followup.

Tree-SHA512: 2ffbaaf0ccb36bcc9fa1a15426566406c6115c8878ff211a4794d982c5d198672d444a20f6c7ae9f341193f6d8118c7cc50896daf98af9553834379e47ddb39e
---
 depends/hosts/linux.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/depends/hosts/linux.mk b/depends/hosts/linux.mk
index 602206d634..99434c90d5 100644
--- a/depends/hosts/linux.mk
+++ b/depends/hosts/linux.mk
@@ -7,7 +7,7 @@ linux_release_CXXFLAGS=$(linux_release_CFLAGS)
 linux_debug_CFLAGS=-O1
 linux_debug_CXXFLAGS=$(linux_debug_CFLAGS)
 
-linux_debug_CPPFLAGS=-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC
+linux_debug_CPPFLAGS=-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC -D_LIBCPP_DEBUG=1
 
 ifeq (86,$(findstring 86,$(build_arch)))
 i686_linux_CC=gcc -m32