Fortran: Enable setting breakpoint on nested functions.

Like in Ada, we want to be able to set a breakpoint on
nested functions, called "contained routines" in Fortran.

2016-06-30  Bernhard Heckel  <bernhard.heckel@intel.com>

gdb/Changelog:
	* dwarf2read.c (todo)

gdb/Changelog:
	* gdb.fortran/nested-funcs.exp: Set breakpoint on contained routines.

Change-Id: I7f2897f8f3160c0d5618850273d87579cc2479c8

gdb/dwarf2read.c

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 945ca61..cba551d 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -6936,7 +6936,9 @@
       break;
     case DW_TAG_subprogram:
       addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr);
-      if (pdi->is_external || cu->language == language_ada)
+      if (pdi->is_external
+	  || cu->language == language_ada
+	  || cu->language == language_fortran)
 	{
           /* brobecker/2007-12-26: Normally, only "external" DIEs are part
              of the global scope.  But in Ada, we want to be able to access
@@ -7219,6 +7221,8 @@
 	{
 	  if (pdi->tag == DW_TAG_entry_point)
 	    add_partial_entry_point (pdi, lowpc, highpc, set_addrmap, cu);
+	  else if (pdi->tag == DW_TAG_subprogram)
+	    add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu);
 	  pdi = pdi->die_sibling;
 	}
     }
@@ -18530,7 +18534,8 @@
 	  SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK;
 	  attr2 = dwarf2_attr (die, DW_AT_external, cu);
 	  if ((attr2 && (DW_UNSND (attr2) != 0))
-              || cu->language == language_ada)
+              || cu->language == language_ada
+	      || cu->language == language_fortran)
 	    {
               /* Subprograms marked external are stored as a global symbol.
                  Ada subprograms, whether marked external or not, are always

gdb/testsuite/gdb.fortran/nested-funcs.exp

diff --git a/gdb/testsuite/gdb.fortran/nested-funcs.exp b/gdb/testsuite/gdb.fortran/nested-funcs.exp
index 976aa22..d098ba1 100755
--- a/gdb/testsuite/gdb.fortran/nested-funcs.exp
+++ b/gdb/testsuite/gdb.fortran/nested-funcs.exp
@@ -30,6 +30,10 @@
     continue

 }

 

+# Test if we can set a breakpoint in a nested function

+gdb_breakpoint "sub_nested_outer"

+gdb_continue_to_breakpoint "sub_nested_outer" ".*local_int = 19"

+

 # Test if we can access local and

 # non-local variables defined one level up.

 gdb_breakpoint [gdb_get_line_number "! BP_outer"]

@@ -43,6 +47,10 @@
 gdb_test "up"

 gdb_test "print index" "= 42" "print index at BP1, one frame up"

 

+# Test if we can set a breakpoint in a nested function

+gdb_breakpoint "sub_nested_inner"

+gdb_continue_to_breakpoint "sub_nested_inner" ".*local_int = 17"

+

 # Test if we can access local and

 # non-local variables defined two level up.

 gdb_breakpoint [gdb_get_line_number "! BP_inner"]