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cpu/esp: Handle format print errors

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This commit is contained in:
Teufelchen1 2024-04-18 17:18:01 +02:00
parent 3c3c5c281c
commit 01e78ed333
1 changed files with 10 additions and 0 deletions
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10
cpu/esp_common/lib_printf.c
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@ -46,6 +46,16 @@ static int _lib_printf(int level, const char* tag, const char* format, va_list a
int len = vsnprintf(_printf_buf, PRINTF_BUFSIZ - 1, format, arg);
if (len < 0) {
ESP_EARLY_LOGI(tag, "Failed to format print");
return 0;
}
/* Did the output get truncated? */
if ((unsigned) len > PRINTF_BUFSIZ - 1) {
len = PRINTF_BUFSIZ - 1;
}
/*
* Since ESP_EARLY_LOG macros add a line break at the end, a terminating
* line break in the output must be removed if there is one.