[libc-commits] [libc] 8735e0c - [libc] Remove superfluous explicitly defaulted constructors (#177471)

[via libc-commits]

Author: Roland McGrath
Date: 2026-01-22T13:49:39-08:00
New Revision: 8735e0c5145d9392b85edd54ca17481eb468d4bf

URL: https://github.com/llvm/llvm-project/commit/8735e0c5145d9392b85edd54ca17481eb468d4bf
DIFF: https://github.com/llvm/llvm-project/commit/8735e0c5145d9392b85edd54ca17481eb468d4bf.diff

LOG: [libc] Remove superfluous explicitly defaulted constructors (#177471)

Any user-defined constructor, even an `= default` one, is
incompatible with aggregate initialization in C++20.

The default constructor does not need to be declared at all in
these cases.  It's implicit.

Added: 
    

Modified: 
    libc/config/linux/app.h
    libc/src/__support/threads/fork_callbacks.cpp

Removed: 
    


################################################################################
diff  --git a/libc/config/linux/app.h b/libc/config/linux/app.h
index 11ac6ee51e5a0..ff4070eead0ca 100644
--- a/libc/config/linux/app.h
+++ b/libc/config/linux/app.h
@@ -76,8 +76,6 @@ struct TLSDescriptor {
   // Note that, dependending the target architecture ABI, it can be the
   // same as |addr| or something else.
   uintptr_t tp = 0;
-
-  constexpr TLSDescriptor() = default;
 };
 
 // Create and initialize the TLS area for the current thread. Should not

diff  --git a/libc/src/__support/threads/fork_callbacks.cpp b/libc/src/__support/threads/fork_callbacks.cpp
index b050b1712f4aa..49fb41a975826 100644
--- a/libc/src/__support/threads/fork_callbacks.cpp
+++ b/libc/src/__support/threads/fork_callbacks.cpp
@@ -22,7 +22,6 @@ struct ForkCallbackTriple {
   ForkCallback *prepare = nullptr;
   ForkCallback *parent = nullptr;
   ForkCallback *child = nullptr;
-  constexpr ForkCallbackTriple() = default;
 };
 
 class AtForkCallbackManager {