fortran generated test: add code to reveal issue

used with Issue #7265

test cases/fortran/7 generated/meson.build

@@ -6,6 +6,11 @@ project('generated', 'fortran')
 conf_data = configuration_data()
 conf_data.set('ONE', 1)
 conf_data.set('TWO', 2)
+conf_data.set('THREE', 3)
+
+outfile = configure_file(
+      input : 'mod3.fpp', output : 'mod3.f90', configuration : conf_data)
+three = library('mod3', meson.current_build_dir() / 'mod3.f90')
 
 templates_basenames = ['mod2', 'mod1']
 generated_sources = []
@@ -18,5 +23,5 @@ foreach template_basename : templates_basenames
 endforeach
 
 sources = ['prog.f90'] + generated_sources
-exe = executable('generated', sources)
+exe = executable('generated', sources, link_with: three)
 test('generated', exe)

test cases/fortran/7 generated/mod2.fpp

@@ -1,5 +1,5 @@
 module mod2
-  use mod1
+use mod1, only : modval1
 implicit none
 
 integer, parameter :: modval2 = @TWO@

test cases/fortran/7 generated/mod3.fpp

@@ -0,0 +1,6 @@
+module mod3
+implicit none
+
+integer, parameter :: modval3 = @THREE@
+
+end module mod3

test cases/fortran/7 generated/prog.f90

@@ -1,7 +1,8 @@
-program prog
-use mod2
+program generated
+use mod2, only : modval1, modval2
+use mod3, only : modval3
 implicit none
 
-if (modval1 + modval2 /= 3) stop 1
+if (modval1 + modval2 + modval3 /= 6) error stop
 
-end program prog
+end program generated