[FS#3263] struct blob_buf must be static when used as a local otherwise a runtime error occurs

[OpenWrt Bugs]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Chris Martin (stuffa) 

Attached to Project - OpenWrt/LEDE Project
Summary - struct blob_buf must be static when used as a local otherwise a runtime error occurs
Task Type - Bug Report
Category - Other
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - openwrt-19.07
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on:
rPi3B+.  I expect that the problem occurs on other devices.  I just happen to be developing in rPi3B+

 - Software versions of OpenWrt/LEDE release, packages, etc.
Release 19.07 trunc

 - Steps to reproduce

void my_function() {
  struct blob_buf b;   // NOTE this is a local variable
  blob_buf_init(&b, 0);
  blobmsg_add_string(&b, "key", "value");
  blob_buf_free(&b);
}

The above will compile, but will crash when run
However by making the struct static it runs OK.

This looks to be a compiler problem.  possibly only for ARM


   

 

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3263

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