Landing: 6999c98dd6ca

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Project / Subsystem

gcc / hppa64

Date

2026-05-15

Author

John David Anglin

Commit

6999c98dd6caee5a1c37b4e203168281f1f568af

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: hppa64
patch_id: —
commit_hash: 6999c98dd6caee5a1c37b4e203168281f1f568af
source_type: github
headline: HPPA64: Use aligned encoding for EH data on 64-bit HP-UX.
tldr: GCC now uses aligned Dwarf EH encodings on HP-UX due to dynamic linker limitations.
author: John David Anglin
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • hppa
• exception handling
• linker
• HP-UX
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/6999c98dd6caee5a1c37b4e203168281f1f568af
date: 2026-05-15T00:00:00.000Z

GCC’s HPPA64 backend now uses DW_EH_PE_aligned encoding for exception handling data on 64-bit HP-UX. Testing revealed that the HP-UX dynamic linker doesn’t support unaligned DW_EH_PE_absptr encodings. This change ensures compatibility with GNU ld and the HP-UX dynamic linker.