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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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src/stats.c
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@ -1623,6 +1623,7 @@ stats_general_print(emitter_t *emitter) {
CONFIG_WRITE_BOOL(cache_oblivious);
CONFIG_WRITE_BOOL(debug);
CONFIG_WRITE_BOOL(fill);
CONFIG_WRITE_BOOL(infallible_new);
CONFIG_WRITE_BOOL(lazy_lock);
emitter_kv(emitter, "malloc_conf", "config.malloc_conf",
emitter_type_string, &config_malloc_conf);
@ -1774,7 +1775,6 @@ stats_general_print(emitter_t *emitter) {
OPT_WRITE_BOOL("zero")
OPT_WRITE_BOOL("utrace")
OPT_WRITE_BOOL("xmalloc")
OPT_WRITE_BOOL("experimental_infallible_new")
OPT_WRITE_BOOL("experimental_tcache_gc")
OPT_WRITE_BOOL("tcache")
OPT_WRITE_SIZE_T("tcache_max")