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* [gcc r12-8985] libstdc++: Fix size passed to operator delete [PR108097]
@ 2022-12-14 14:18 Jonathan Wakely
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From: Jonathan Wakely @ 2022-12-14 14:18 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:e9d58614b0b8eebd64d568fa22cd31faaa5f8dce
commit r12-8985-ge9d58614b0b8eebd64d568fa22cd31faaa5f8dce
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Wed Dec 14 11:58:05 2022 +0000
libstdc++: Fix size passed to operator delete [PR108097]
The number of elements gets stored in _M_capacity so use a separate
variable for the number of bytes to allocate.
libstdc++-v3/ChangeLog:
PR libstdc++/108097
* include/std/stacktrace (basic_stracktrace::_Impl): Do not
multiply N by sizeof(value_type) when allocating.
(cherry picked from commit 881c6cabce5d0b27285ed41bd6dabdf48848cce7)
Diff:
---
libstdc++-v3/include/std/stacktrace | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/libstdc++-v3/include/std/stacktrace b/libstdc++-v3/include/std/stacktrace
index 8e6c79a2f4f..a067d629a16 100644
--- a/libstdc++-v3/include/std/stacktrace
+++ b/libstdc++-v3/include/std/stacktrace
@@ -600,8 +600,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
if constexpr (is_same_v<allocator_type, allocator<value_type>>)
{
- __n *= sizeof(value_type);
- void* const __p = _GLIBCXX_OPERATOR_NEW (__n, nothrow_t{});
+ // For std::allocator we use nothrow-new directly so we
+ // don't need to handle bad_alloc exceptions.
+ size_t __nb = __n * sizeof(value_type);
+ void* const __p = _GLIBCXX_OPERATOR_NEW (__nb, nothrow_t{});
if (__p == nullptr) [[unlikely]]
return nullptr;
_M_frames = static_cast<pointer>(__p);
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