Skip to content

fix: define _BACKUP_ITERATOR_DEBUG_LEVEL for MSVC 17.12+ compatibility #5957

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
loumalouomega wants to merge 2 commits into from
+9 −0
Closed

fix: define _BACKUP_ITERATOR_DEBUG_LEVEL for MSVC 17.12+ compatibility #5957

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
a3bdd9d
fix: Fixes compilation failure with MSVC 17.12 (v14.44) and C++20: '_…
loumalouomega Jan 9, 2026
c450c85
style: pre-commit fixes
pre-commit-ci[bot] Jan 9, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions include/pybind11/pybind11.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,15 @@
*/

#pragma once

// See Issue #5956. This fixes compilation failure with MSVC 17.12 (v14.44) and C++20:
// '_BACKUP_ITERATOR_DEBUG_LEVEL' undeclared when including span header from STL.
#if defined(_MSC_VER)
# ifndef _BACKUP_ITERATOR_DEBUG_LEVEL
# define _BACKUP_ITERATOR_DEBUG_LEVEL 0
# endif
#endif

#include "detail/class.h"
#include "detail/dynamic_raw_ptr_cast_if_possible.h"
#include "detail/exception_translation.h"
Expand Down
Loading