fortran: Add testcases for PR120152, PR120153 and PR120158

The following patch adds testcase coverage for the 3 recently fixed
libgfortran PRs.
On trunk before those fixes I'm getting with -m32
FAIL: gfortran.dg/pr120152_1.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/pr120152_1.f90   -Os  (test for excess errors)
and with -m64
FAIL: gfortran.dg/pr120152_1.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/pr120152_1.f90   -Os  (test for excess errors)
FAIL: gfortran.dg/pr120152_2.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/pr120152_2.f90   -Os  (test for excess errors)
FAIL: gfortran.dg/pr120153.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/pr120153.f90   -O1  (test for excess errors)
FAIL: gfortran.dg/pr120153.f90   -O2  (test for excess errors)
FAIL: gfortran.dg/pr120153.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gfortran.dg/pr120153.f90   -O3 -g  (test for excess errors)
FAIL: gfortran.dg/pr120153.f90   -Os  (test for excess errors)
FAIL: gfortran.dg/pr120158.f90   -O0  execution test
FAIL: gfortran.dg/pr120158.f90   -O1  execution test
FAIL: gfortran.dg/pr120158.f90   -O2  execution test
FAIL: gfortran.dg/pr120158.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/pr120158.f90   -O3 -g  execution test
FAIL: gfortran.dg/pr120158.f90   -Os  execution test
On latest trunk everything PASSes.

2025-05-08  Jakub Jelinek  <jakub@redhat.com>

	PR libfortran/120152
	PR libfortran/120153
	PR libfortran/120158
	* gfortran.dg/pr120152_1.f90: New test.
	* gfortran.dg/pr120152_2.f90: New test.
	* gfortran.dg/pr120153.f90: New test.
	* gfortran.dg/pr120158.f90: New test.

4 files changed, 183 insertions, 0 deletions

diff --git a/gcc/testsuite/gfortran.dg/pr120152_1.f90 b/gcc/testsuite/gfortran.dg/pr120152_1.f90
new file mode 100644
index 0000000..c49197d
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr120152_1.f90
@@ -0,0 +1,52 @@
+! PR libfortran/120152
+! { dg-do run }
+
+subroutine f1
+  integer(kind=8) :: a (10, 10, 10), b (10, 10)
+  logical :: c (10, 10, 10)
+  a = 0
+  c = .true.
+  b = maxloc (a, 2, c, 8, .true.)
+end
+subroutine f2
+  integer(kind=8) :: a (10, 10, 10)
+  integer(kind=4) :: b (10, 10)
+  logical :: c (10, 10, 10)
+  a = 0
+  c = .true.
+  b = maxloc (a, 2, c, 4, .true.)
+end
+subroutine f3
+  integer(kind=8) :: a (10, 10, 10), b (10, 10)
+  a = 0
+  b = maxloc (a, 2, kind=8, back=.true.)
+end
+subroutine f4
+  integer(kind=8) :: a (10, 10, 10)
+  integer(kind=4) :: b (10, 10)
+  a = 0
+  b = maxloc (a, 2, kind=4, back=.true.)
+end
+subroutine f5
+  integer(kind=8) :: a (10, 10, 10), b (10, 10)
+  logical :: c
+  a = 0
+  c = .false.
+  b = maxloc (a, 2, c, 8, .true.)
+end
+subroutine f6
+  integer(kind=8) :: a (10, 10, 10)
+  integer(kind=4) :: b (10, 10)
+  logical :: c
+  a = 0
+  c = .false.
+  b = maxloc (a, 2, c, 4, .true.)
+end
+program pr120152
+  call f1
+  call f2
+  call f3
+  call f4
+  call f5
+  call f6
+end
diff --git a/gcc/testsuite/gfortran.dg/pr120152_2.f90 b/gcc/testsuite/gfortran.dg/pr120152_2.f90
new file mode 100644
index 0000000..39cfb28
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr120152_2.f90
@@ -0,0 +1,80 @@
+! PR libfortran/120152
+! { dg-do run { target fortran_large_int } }
+
+subroutine f1
+  integer(kind=16) :: a (10, 10, 10)
+  integer(kind=8) :: b (10, 10)
+  logical :: c (10, 10, 10)
+  a = 0
+  c = .true.
+  b = maxloc (a, 2, c, 8, .true.)
+end
+subroutine f2
+  integer(kind=16) :: a (10, 10, 10)
+  integer(kind=4) :: b (10, 10)
+  logical :: c (10, 10, 10)
+  a = 0
+  c = .true.
+  b = maxloc (a, 2, c, 4, .true.)
+end
+subroutine f3
+  integer(kind=16) :: a (10, 10, 10)
+  integer(kind=8) :: b (10, 10)
+  a = 0
+  b = maxloc (a, 2, kind=8, back=.true.)
+end
+subroutine f4
+  integer(kind=16) :: a (10, 10, 10)
+  integer(kind=4) :: b (10, 10)
+  a = 0
+  b = maxloc (a, 2, kind=4, back=.true.)
+end
+subroutine f5
+  integer(kind=16) :: a (10, 10, 10)
+  integer(kind=8) :: b (10, 10)
+  logical :: c
+  a = 0
+  c = .false.
+  b = maxloc (a, 2, c, 8, .true.)
+end
+subroutine f6
+  integer(kind=16) :: a (10, 10, 10)
+  integer(kind=4) :: b (10, 10)
+  logical :: c
+  a = 0
+  c = .false.
+  b = maxloc (a, 2, c, 4, .true.)
+end
+subroutine f7
+  integer(kind=8) :: a (10, 10, 10)
+  integer(kind=16) :: b (10, 10)
+  logical :: c (10, 10, 10)
+  a = 0
+  c = .true.
+  b = maxloc (a, 2, c, 16, .true.)
+end
+subroutine f8
+  integer(kind=8) :: a (10, 10, 10)
+  integer(kind=16) :: b (10, 10)
+  a = 0
+  b = maxloc (a, 2, kind=16, back=.true.)
+end
+subroutine f9
+  integer(kind=8) :: a (10, 10, 10)
+  integer(kind=16) :: b (10, 10)
+  logical :: c
+  a = 0
+  c = .false.
+  b = maxloc (a, 2, c, 16, .true.)
+end
+program pr120152
+  call f1
+  call f2
+  call f3
+  call f4
+  call f5
+  call f6
+  call f7
+  call f8
+  call f9
+end
diff --git a/gcc/testsuite/gfortran.dg/pr120153.f90 b/gcc/testsuite/gfortran.dg/pr120153.f90
new file mode 100644
index 0000000..22a7849
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr120153.f90
@@ -0,0 +1,36 @@
+! PR libfortran/120153
+! { dg-do run { target fortran_large_int } }
+! { dg-additional-options "-funsigned" }
+
+subroutine f1
+  unsigned(kind=16) :: a (10, 10, 10)
+  integer(kind=16) :: b (10, 10)
+  logical :: c (10, 10, 10)
+  a = 0u_16
+  c = .true.
+  b = maxloc (a, 2, c, 16, .true.)
+end
+subroutine f2
+  unsigned(kind=16) :: a (10, 10, 10)
+  integer(kind=16) :: b (10, 10)
+  a = 0u_16
+  b = maxloc (a, 2, kind=16, back=.true.)
+end
+subroutine f3
+  unsigned(kind=16) :: a (10, 10, 10)
+  integer(kind=8) :: b (10, 10)
+  logical :: c
+  a = 0u_16
+  c = .false.
+  b = maxloc (a, 2, c, 16, .true.)
+end
+subroutine f4
+  unsigned(kind=16) :: a (5, 5, 5)
+  call random_number (a)
+end
+program pr120153
+  call f1
+  call f2
+  call f3
+  call f4
+end
diff --git a/gcc/testsuite/gfortran.dg/pr120158.f90 b/gcc/testsuite/gfortran.dg/pr120158.f90
new file mode 100644
index 0000000..593f4bc
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr120158.f90
@@ -0,0 +1,15 @@
+! PR libfortran/120158
+! { dg-do run { target fortran_large_int } }
+! { dg-additional-options "-funsigned" }
+
+  unsigned(kind=8) :: a(10, 10, 10), b(10, 10)
+  integer(kind=8) :: c(10, 10), d(10, 10)
+  a = 0u_8
+  if (maxval (a) .ne. 0u_8) stop 1
+  b = maxval (a, 1)
+  if (any (b .ne. 0u_8)) stop 2
+  c = maxloc (a, 1)
+  d = maxloc (a, 2, back=.true.)
+  if (any (c .ne. 1)) stop 3
+  if (any (d .ne. 10)) stop 4
+end