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a202ec2caf
sizeof(time_t) was previously switched from 4 to 8, ROM functions that use
time_t or dependent types (such as "struct stat") are no longer called due as
they still treat sizeof(time_t) as 4 (see commit
24c20d18).
However, there is a ROM callpath that was left out. If putchar is the first
stdio print related call, the call path will result in cantwrite() ->
__swsetup_r() -> __smakebuf_r() -> __swhatbuf_r() using the ROM "struct stat"
(where sizeof(time_t)==4).
Instead of removing all printf related ROM newlib functions (which will result
in increased binary size), this commit adds a workaround to setup the stdio
files before any print related calls occur.
This results in cantwrite() always returning false, thus the callpath described
above never being reached.
Closes https://github.com/espressif/esp-idf/issues/9269
18 lines
1017 B
C
18 lines
1017 B
C
/*
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* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#define ESP_ROM_HAS_CRC_LE (1) // ROM CRC library supports Little Endian
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#define ESP_ROM_HAS_CRC_BE (1) // ROM CRC library supports Big Endian
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#define ESP_ROM_HAS_JPEG_DECODE (1) // ROM has JPEG decode library
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#define ESP_ROM_UART_CLK_IS_XTAL (1) // UART clock source is selected to XTAL in ROM
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#define ESP_ROM_USB_SERIAL_DEVICE_NUM (3) // UART uses USB_SERIAL_JTAG port in ROM.
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#define ESP_ROM_HAS_RETARGETABLE_LOCKING (1) // ROM was built with retargetable locking
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#define ESP_ROM_HAS_ERASE_0_REGION_BUG (1) // ROM has esp_flash_erase_region(size=0) bug
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#define ESP_ROM_GET_CLK_FREQ (1) // Get clk frequency with rom function `ets_get_cpu_frequency`
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#define ESP_ROM_NEEDS_SWSETUP_WORKAROUND (1) // ROM uses 32-bit time_t. A workaround is required to prevent printf functions from crashing
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