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Thu, 14 May 2026 19:47:16 -0700 (PDT) MIME-Version: 1.0 References: <1140010.1778810969@sss.pgh.pa.us> In-Reply-To: <1140010.1778810969@sss.pgh.pa.us> From: John Naylor Date: Fri, 15 May 2026 09:47:04 +0700 X-Gm-Features: AVHnY4LKKzv33eOHjDvIu6N-kpxng7NQ_iYL56EA7F2f5Xf3uLJsIWBaSkvSghs Message-ID: Subject: Re: Re-add recently-removed tests for ltree and intarray To: Tom Lane Cc: Michael Paquier , Postgres hackers Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Fri, May 15, 2026 at 9:09=E2=80=AFAM Tom Lane wrote: > (b) the failure only appeared on buildfarm members running on ppc64 > or s390x. I determined by examining assembly code that ppc64 uses > about 3X as much stack per call level in this function as x86_64; > probably s390x is similar. That was enough to overrun our default > max_stack_depth on these architectures, even though the same case > passed on the machines we'd tested on. FWIW, I tried to reproduce with the former new tests un-reverted, and didn't see stack overflow on the following, so unless I fat-fingered that I wonder if there's something more specific on the previously failing members: ppc64le / gcc 8.5 / Linux kernel 4.18 S390X / gcc 13.3 / Linux kernel 6.8 --=20 John Naylor Amazon Web Services