[llvm-branch-commits] [libcxx] [release/19.x] Cherry-picks to fix the zdump spurious failures in CI (PR #110259)

[Louis Dionne via llvm-branch-commits]

https://github.com/ldionne created https://github.com/llvm/llvm-project/pull/110259

None

>From 3be5c6921fbc46a3a4a6957b7b58c2398c8a8ce8 Mon Sep 17 00:00:00 2001
From: David Spickett <david.spickett at linaro.org>
Date: Thu, 15 Aug 2024 08:14:13 +0000
Subject: [PATCH 1/2] [lldb][test] Mark sys_info zdump test unsupported on 32
 bit Arm Linux

Until https://github.com/llvm/llvm-project/pull/103056 lands
or another more appropriate check can be found.

This test fails on Ubuntu Focal where zdump is built with 32 bit time_t
but passes on Ubuntu Jammy where zdump is built with 64 bit time_t.

Marking it unsupported means Linaro can upgrade its bots to Ubuntu
Jammy without getting an unexpected pass.

(cherry picked from commit 6f6422f4a2b8647a59936c131e50a79906d89510)
---
 .../time.zone.members/sys_info.zdump.pass.cpp                   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp b/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp
index 207f8e4df45413..2b97d9a5bc745b 100644
--- a/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp
+++ b/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp
@@ -14,7 +14,7 @@
 // XFAIL: availability-tzdb-missing
 
 // TODO TZDB Investigate
-// XFAIL: target={{armv(7|8)l-linux-gnueabihf}}
+// UNSUPPORTED: target={{armv(7|8)l-linux-gnueabihf}}
 
 #include <chrono>
 #include <format>

>From 4b2637684d07acdd96f55ed25a9b3c6bd9e0bda1 Mon Sep 17 00:00:00 2001
From: David Spickett <david.spickett at linaro.org>
Date: Fri, 13 Sep 2024 09:14:53 +0100
Subject: [PATCH 2/2] [libcxx][test] Use smaller time range for 32 bit time_t
 (#104762)

This fixes the test on Arm 32 bit Ubuntu Jammy where time_t is 32 bit.

(cherry picked from commit cdd608b8f0ce090b3568238387df368751bdbb5d)
---
 .../time.zone.members/sys_info.zdump.pass.cpp                | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp b/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp
index 2b97d9a5bc745b..b474fe50083b1d 100644
--- a/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp
+++ b/libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/sys_info.zdump.pass.cpp
@@ -13,9 +13,6 @@
 // XFAIL: libcpp-has-no-experimental-tzdb
 // XFAIL: availability-tzdb-missing
 
-// TODO TZDB Investigate
-// UNSUPPORTED: target={{armv(7|8)l-linux-gnueabihf}}
-
 #include <chrono>
 #include <format>
 #include <fstream>
@@ -28,7 +25,7 @@
 // The year range to validate. The dates used in practice are expected to be
 // inside the tested range.
 constexpr std::chrono::year first{1800};
-constexpr std::chrono::year last{2100};
+constexpr std::chrono::year last{sizeof(time_t) == 8 ? 2100 : 2037};
 
 // A custom sys_info class that also stores the name of the time zone.
 // Its formatter matches the output of zdump.