JDK-8307210 : Dangling reference warnings for harfbuzz
  • Type: Bug
  • Component: client-libs
  • Sub-Component: 2d
  • Affected Version: 20,21
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2023-05-02
  • Updated: 2023-05-05
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Other
tbdUnresolved
Related Reports
Relates :  
JDK-8307301 - Update HarfBuzz to 7.2.0
Relates :  
JDK-8307147 - [x86] Dangling pointer warning for Assembler::_attributes
Relates :  
JDK-8307196 - Dangling pointer warning for MetadataAllocationRequest
Description
When compiling with gcc13.1 we get a large number (>500) `-Wdangling-reference` warnings from harfbuzz code. Many appear to be duplicates, so the actual number of places in the code triggering these warnings is much smaller.

Given that harfbuzz seems to be working fine, it's possible these are all false positives. `-Wdangling-reference` warnings are new in this (gcc13.1) newly released version, and it may be there are still bugs in gcc's analysis to be worked out.
Comments
Perhaps that is what we've done in the past.... We should revisit this after the upcoming hb upgrade which will happen this side of RDP 1.
03-05-2023