Hello Simon,

when running ./u-boot -T -l and issuing the poweroff command a crash occurs:

os_exit() results in std::ostream::flush() calling U-Boot's fflush with
file = -138447008 (or any other negative number)

Man fflush shows the following definition:

    int fflush(FILE *stream);

U-Boot's fflush() is defined as

    void fflush(int file);

The pointer FILE *stream is truncated to int which may result in a
negative number when invoking U-Boot's fflush() but anyway we want
std::ostream::flush() to invoke glibc's fflush().

Can we ensure correct linking or do we have to rename fflush()?

Best regards

Heinrich

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