_stat uninitialized if open() a non existing file with file creation permission.

[everslick]

Board

n.a.

Device Description

n.a.

Hardware Configuration

n.a.

Version

latest master (checkout manually)

IDE Name

n.a.

Operating System

n.a.

Flash frequency

n.a.

PSRAM enabled

yes

Upload speed

n.a.

Description

I believe there is a serious bug in FileImpl constructor https://github.com/espressif/arduino-esp32/blob/master/libraries/FS/src/vfs_api.cpp#L272 when the file does not exist yet, but is allowed to be created (mode[0] != 'r').

In that case _stat stays uninitialized, which can be seen by size() returning garbage, if called right after open(). Furthermore, I 'think' this leads to also _stat.st_blksize being uninitialized which sounds even more scary. ;-)

The best fix would probably be to memset() the _stat member to 0 in the constructor.

Sketch

n.a.

Debug Message

opening CSV file 'foobar.csv' using mode 'a+'
file='foobar.csv', size=1073638176 bytes, position=0

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[Parsaabasi]

Hello,

Due to the overwhelming volume of issues currently being addressed, we have decided to close the previously received tickets. If you still require assistance or if the issue persists, please don't hesitate to reopen the ticket.

Thanks.