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1 files changed, 39 insertions, 0 deletions

diff --git a/gcc/testsuite/gfortran.dg/string_compare_2.f90 b/gcc/testsuite/gfortran.dg/string_compare_2.f90
new file mode 100644
index 000000000..966ed554a
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/string_compare_2.f90
@@ -0,0 +1,39 @@
+! { dg-do run }
+
+! PR fortran/37099
+! Check for correct results when comparing array-section-substrings.
+
+! This is the original test from the PR.
+! Contributed by Dominique d'Humieres <dominiq@lps.ens.fr>
+
+module xparams
+  integer,parameter :: exprbeg=100,exprend=154
+  character(*),dimension(exprbeg:exprend),parameter :: &
+      exprs=(/'nint()  ','log10() ','sqrt()  ','acos()  ','asin()  ',   &
+      'atan()  ','cosh()  ','sinh()  ','tanh()  ','int()   ',           &
+      'cos()   ','sin()   ','tan()   ','exp()   ','log()   ','abs()   ',&
+      'delta() ','step()  ','rect()  ','max(,)  ','min(,)  ','bj0()   ',&
+      'bj1()   ','bjn(,)  ','by0()   ','by1()   ','byn(,)  ','logb(,) ',&
+      'erf()   ','erfc()  ','lgamma()','gamma() ','csch()  ','sech()  ',&
+      'coth()  ','lif(,,) ','gaus()  ','sinc()  ','atan2(,)','mod(,)  ',&
+      'nthrt(,)','ramp()  ','fbi()   ','fbiq()  ','uran(,) ','aif(,,,)',&
+      'sgn()   ','cbrt()  ','fact()  ','somb()  ','bk0()   ','bk1()   ',&
+      'bkn(,)  ','bbi(,,) ','bbiq(,,)'/)
+  logical :: tmp(55,26)
+  character(26) :: al = 'abcdefghijklmnopqrstuvwxyz'
+end
+
+program pack_bug
+  use xparams
+    do i = 1, 1
+      tmp(:,i) = (exprs(:)(1:1)==al(i:i))
+      print '(55L1)', exprs(:)(1:1)=='a'
+      print '(55L1)', tmp(:,i)
+
+      if (any ((exprs(:)(1:1)=='a') .neqv. tmp(:,i))) then
+        call abort ()
+      end if
+    end do
+end
+
+! { dg-final { cleanup-modules "xparams" } }