From 082a394dd045032be2a973d1bf06336c5773f268 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Zaoral?= <lzaoral@redhat.com>
Date: Tue, 3 Feb 2026 14:04:28 +0100
Subject: [PATCH] fix ppc64le test failures

Resolves: RHEL-77878
---
 fix-ppc64le-power10-test-failures.patch | 47 +++++++++++++++++++++++++
 numpy.spec                              |  7 +++-
 2 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 fix-ppc64le-power10-test-failures.patch

diff --git a/fix-ppc64le-power10-test-failures.patch b/fix-ppc64le-power10-test-failures.patch
new file mode 100644
index 0000000..80fdd9b
--- /dev/null
+++ b/fix-ppc64le-power10-test-failures.patch
@@ -0,0 +1,47 @@
+From e89ec589000e471f04c71b676c866baec05ecd7d Mon Sep 17 00:00:00 2001
+From: Sandeep Gupta <sandeep.gupta12@ibm.com>
+Date: Thu, 9 Oct 2025 22:42:35 +0530
+Subject: [PATCH] BUG: Fix INT_MIN % -1 to return 0 for all signed integer
+ types (#29893)
+
+* BUG: Fix INT_MIN % -1 to return 0 for all signed integer types
+
+- Explicitly check for INT_MIN % -1 in scalar tail loops for fmod and remainder kernels.
+- Set result to 0 to avoid undefined behavior and match NumPy/Python expectations.
+- Ensures correct, portable behavior on all platforms (e.g., PPC64LE).
+
+* Apply suggestion from @seberg
+
+---------
+
+Co-authored-by: Sebastian Berg <sebastian@sipsolutions.net>
+---
+ numpy/_core/src/umath/loops_modulo.dispatch.c.src | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/numpy/core/src/umath/loops_modulo.dispatch.c.src b/numpy/core/src/umath/loops_modulo.dispatch.c.src
+index 032cc3344060..4645fe14a487 100644
+--- a/numpy/core/src/umath/loops_modulo.dispatch.c.src
++++ b/numpy/core/src/umath/loops_modulo.dispatch.c.src
+@@ -490,12 +490,16 @@ vsx4_simd_@func@_by_scalar_contig_@sfx@(char **args, npy_intp len)
+ #else /* fmod and remainder */
+     for (; len > 0; --len, ++src1, ++dst1) {
+         const npyv_lanetype_@sfx@ a = *src1;
+-        *dst1 = a % scalar;
++        if (NPY_UNLIKELY(a == NPY_MIN_INT@len@ && scalar == -1)) {
++            *dst1 = 0;
++        } else {
++            *dst1 = a % scalar;
+ #if @id@ == 1 /* remainder */
+-        if (!((a > 0) == (scalar > 0) || *dst1 == 0)) {
+-            *dst1 += scalar;
+-        }
++            if (!((a > 0) == (scalar > 0) || *dst1 == 0)) {
++                *dst1 += scalar;
++            }
+ #endif
++        }
+     }
+ #endif
+     npyv_cleanup();
+
diff --git a/numpy.spec b/numpy.spec
index db2f06c..1220072 100644
--- a/numpy.spec
+++ b/numpy.spec
@@ -20,7 +20,7 @@
 
 Name:           numpy
 Version:        1.26.4
-Release:        5%{?dist}
+Release:        6%{?dist}
 Epoch:          1
 Summary:        A fast multidimensional array facility for Python
 
@@ -38,6 +38,8 @@ Patch0:         f2py_test.patch
 # Python 3.13: Replace deprecated ctypes.ARRAY(item_type, size) with item_type * size
 # Upstream PR: https://github.com/numpy/numpy/pull/25198
 Patch4:         replace-deprecated-ctypes.ARRAY.patch
+# https://github.com/numpy/numpy/commit/e89ec589000e471f04c71b676c866baec05ecd7d
+Patch5:         fix-ppc64le-power10-test-failures.patch
 
 
 %description
@@ -245,6 +247,9 @@ python3 runtests.py --no-build -- -ra -k 'not test_ppc64_ibm_double_double128 %{
 
 
 %changelog
+* Tue Feb 03 2026 Lukáš Zaoral <lzaoral@redhat.com> - 1:1.26.4-6
+- fix ppc64le test failures (RHEL-77878)
+
 * Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 1:1.26.4-5
 - Bump release for October 2024 mass rebuild:
   Resolves: RHEL-64018