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Replace experimental_infallible_new with compile-time flag

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The runtime option aborted on every OOM, breaking new(std::nothrow)
semantics. Replace with configure-time --enable-cxx-infallible-new
(default off): when on, throwing new aborts (size logged) and
nothrow returns null; when off, standard new_handler + bad_alloc /
null behavior is preserved. Under LTO the on-path lets the compiler
prove operator new is no-throw.
This commit is contained in:
Slobodan Predolac
2026-06-04 10:58:43 -07:00
parent a6048680a8
commit 160ab9d7f6
19 changed files with 103 additions and 44 deletions
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test/unit/mallctl.c
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@@ -266,6 +266,7 @@ TEST_BEGIN(test_mallctl_config) {
TEST_MALLCTL_CONFIG(cache_oblivious, bool);
TEST_MALLCTL_CONFIG(debug, bool);
TEST_MALLCTL_CONFIG(fill, bool);
TEST_MALLCTL_CONFIG(infallible_new, bool);
TEST_MALLCTL_CONFIG(lazy_lock, bool);
TEST_MALLCTL_CONFIG(malloc_conf, const char *);
TEST_MALLCTL_CONFIG(prof, bool);