Richard Smith 703529fc55 Destroy temporaries at the end of expression statements. (#7513) ...

Instead of tracking the cleanup scope depth on entry to each scope,
track an "ambient" cleanup scope depth that's *after* the destructors of
local variables in that scope. This gets increased to include the
destructors of local variables when we create a name-binding
declaration. Then, when we reach a point where temporaries should be
destroyed, run cleanups that are after the ambient cleanup scope depth
on the stack. This happens:

* At the `;` of a statement expression.
* At the `)` of an `if` or `while` statement.
* After performing the implied `HasValue()` call in a `for` statement.

Per informal agreement with leads, this means we lifetime-extend all
temporaries created in the initializer of a name-binding declaration to
the full scope of that declaration, but that temporaries created in an
expression statement are destroyed at the `;`.

2026-07-16 15:12:39 +00:00

..

cross_package_call.carbon

Add separators between files in LLVM IR dumps (#7463)

2026-07-07 16:31:24 +00:00

imported_package_mangle_string.carbon

Add separators between files in LLVM IR dumps (#7463)

2026-07-07 16:31:24 +00:00

imported_package_mangle.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00

imported_type_completeness.carbon

Destroy temporaries at the end of expression statements. (#7513)

2026-07-16 15:12:39 +00:00

private_external_mangle.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00

separate_compilation_witness.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00