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| author | Paul Keir <paul.keir@uws.ac.uk> | 2024-02-12 18:15:49 +0000 |
|---|---|---|
| committer | Patrick Palka <ppalka@redhat.com> | 2024-02-12 18:18:04 -0500 |
| commit | 065dddc6e07a917c57c7955db13b1fe77abbcabc (patch) | |
| tree | d66655fe863159f63beaa409c1e2eb7aeae927eb /gcc/tree-vect-loop.cc | |
| parent | 39d989022dd0eacf1a7b95b7b20621acbe717d70 (diff) | |
| download | gcc-065dddc6e07a917c57c7955db13b1fe77abbcabc.zip gcc-065dddc6e07a917c57c7955db13b1fe77abbcabc.tar.gz gcc-065dddc6e07a917c57c7955db13b1fe77abbcabc.tar.bz2 | |
libstdc++: Fix constexpr basic_string union member [PR113294]
A call to `basic_string::clear()` in the std::string move assignment
operator leads to a constexpr error from an access of inactive union
member `_M_local_buf` in the added test (`test_move()`). Changing
`__str._M_local_buf` to `__str._M_use_local_data()` in
`operator=(basic_string&& __str)` fixes this.
PR libstdc++/113294
libstdc++-v3/ChangeLog:
* include/bits/basic_string.h (basic_string::operator=): Use
_M_use_local_data() instead of _M_local_buf on the moved-from
string.
* testsuite/21_strings/basic_string/modifiers/constexpr.cc
(test_move): New test.
Signed-off-by: Paul Keir <paul.keir@uws.ac.uk>
Reviewed-by: Patrick Palka <ppalka@redhat.com>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
Diffstat (limited to 'gcc/tree-vect-loop.cc')
0 files changed, 0 insertions, 0 deletions