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export netbsd's reallocarr proposal. (#433)

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* export netbsd's reallocarr proposal.

acts subtly differently from reallocarray, returns an error code
and first argument as receiver.

* not export by default

* ci tests

* apply suggestions

* doc addition

* Apply suggestions from code review

Co-authored-by: Matthew Parkinson <mjp41@users.noreply.github.com>
This commit is contained in:
David CARLIER
2021-12-02 14:49:32 +00:00
committed by GitHub
parent 7f3642e05c
commit 360efa2123
4 changed files with 164 additions and 1 deletions
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8
CMakeLists.txt
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@@ -16,6 +16,8 @@ option(USE_SNMALLOC_STATS "Track allocation stats" OFF)
option(SNMALLOC_CI_BUILD "Disable features not sensible for CI" OFF)
option(SNMALLOC_QEMU_WORKAROUND "Disable using madvise(DONT_NEED) to zero memory on Linux" Off)
option(SNMALLOC_USE_CXX17 "Build as C++17 for legacy support." OFF)
option(SNMALLOC_NO_REALLOCARRAY "Build without reallocarray exported" ON)
option(SNMALLOC_NO_REALLOCARR "Build without reallocarr exported" ON)
# Options that apply only if we're not building the header-only library
cmake_dependent_option(SNMALLOC_RUST_SUPPORT "Build static library for rust" OFF "NOT SNMALLOC_HEADER_ONLY_LIBRARY" OFF)
cmake_dependent_option(SNMALLOC_STATIC_LIBRARY "Build static libraries" ON "NOT SNMALLOC_HEADER_ONLY_LIBRARY" OFF)
@@ -195,6 +197,12 @@ add_as_define(USE_SNMALLOC_STATS)
add_as_define(SNMALLOC_QEMU_WORKAROUND)
add_as_define(SNMALLOC_CI_BUILD)
add_as_define(SNMALLOC_PLATFORM_HAS_GETENTROPY)
if (SNMALLOC_NO_REALLOCARRAY)
add_as_define(SNMALLOC_NO_REALLOCARRAY)
endif()
if (SNMALLOC_NO_REALLOCARR)
add_as_define(SNMALLOC_NO_REALLOCARR)
endif()
target_compile_definitions(snmalloc INTERFACE $<$<BOOL:CONST_QUALIFIED_MALLOC_USABLE_SIZE>:MALLOC_USABLE_SIZE_QUALIFIER=const>)