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Always abort on allocation when out-of-memory (#2129)
Co-authored-by: Otto winter <otto@otto-winter.com>
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esphome
@ -14,7 +14,7 @@ const Color COLOR_OFF(0, 0, 0, 0);
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const Color COLOR_ON(255, 255, 255, 255);
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void DisplayBuffer::init_internal_(uint32_t buffer_length) {
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this->buffer_ = new uint8_t[buffer_length];
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this->buffer_ = new (std::nothrow) uint8_t[buffer_length];
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if (this->buffer_ == nullptr) {
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ESP_LOGE(TAG, "Could not allocate buffer for display!");
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return;
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@ -275,8 +275,8 @@ void Nextion::upload_tft() {
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} else {
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#endif
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ESP_LOGD(TAG, "Allocating buffer size %d, Heap size is %u", chunk_size, ESP.getFreeHeap());
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this->transfer_buffer_ = new uint8_t[chunk_size];
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if (!this->transfer_buffer_) { // Try a smaller size
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this->transfer_buffer_ = new (std::nothrow) uint8_t[chunk_size];
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if (this->transfer_buffer_ == nullptr) { // Try a smaller size
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ESP_LOGD(TAG, "Could not allocate buffer size: %d trying 4096 instead", chunk_size);
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chunk_size = 4096;
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ESP_LOGD(TAG, "Allocating %d buffer", chunk_size);
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@ -344,6 +344,15 @@ async def to_code(config):
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else:
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cg.add_library(lib, None)
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if CORE.is_esp8266:
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# Arduino 2 has a non-standards conformant new that returns a nullptr instead of failing when
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# out of memory and exceptions are disabled. Since Arduino 2.6.0, this flag can be used to make
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# new abort instead. Use it so that OOM fails early (on allocation) instead of on dereference of
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# a NULL pointer (so the stacktrace makes more sense), and for consistency with Arduino 3,
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# which always aborts if exceptions are disabled.
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# For cases where nullptrs can be handled, use nothrow: `new (std::nothrow) T;`
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cg.add_build_flag("-DNEW_OOM_ABORT")
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cg.add_build_flag("-Wno-unused-variable")
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cg.add_build_flag("-Wno-unused-but-set-variable")
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cg.add_build_flag("-Wno-sign-compare")
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