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Always abort on allocation when out-of-memory (#2129)

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Co-authored-by: Otto winter <otto@otto-winter.com>
This commit is contained in:
Oxan van Leeuwen
2021-08-10 10:46:46 +02:00
committed by GitHub
parent f26767b65e
commit c6c2842bdb
3 changed files with 12 additions and 3 deletions
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9
esphome/core/config.py
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@@ -344,6 +344,15 @@ async def to_code(config):
else:
cg.add_library(lib, None)
if CORE.is_esp8266:
# Arduino 2 has a non-standards conformant new that returns a nullptr instead of failing when
# out of memory and exceptions are disabled. Since Arduino 2.6.0, this flag can be used to make
# new abort instead. Use it so that OOM fails early (on allocation) instead of on dereference of
# a NULL pointer (so the stacktrace makes more sense), and for consistency with Arduino 3,
# which always aborts if exceptions are disabled.
# For cases where nullptrs can be handled, use nothrow: `new (std::nothrow) T;`
cg.add_build_flag("-DNEW_OOM_ABORT")
cg.add_build_flag("-Wno-unused-variable")
cg.add_build_flag("-Wno-unused-but-set-variable")
cg.add_build_flag("-Wno-sign-compare")