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a45fcce631
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
26 lines
1.5 KiB
C
26 lines
1.5 KiB
C
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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_SUPPORT_MULTIPLE_UART (1) // ROM has multiple UARTs available for logging
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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_HAS_RETARGETABLE_LOCKING (1) // ROM was built with retargetable locking
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#define ESP_ROM_USB_SERIAL_DEVICE_NUM (4) // The serial port ID (UART, USB, ...) of USB_SERIAL_JTAG in the ROM.
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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_NEEDS_SWSETUP_WORKAROUND (1) // ROM uses 32-bit time_t. A workaround is required to prevent printf functions from crashing
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