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* dwarf2read.c (dwarf2_flag_true_p): New function.

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(die_is_declaration): Use the function above. Add some comments.
This commit is contained in:
Joel Brobecker 2004-04-19 18:12:00 +00:00
parent 0f26089687
commit 05cf31d198
2 changed files with 29 additions and 2 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2004-04-19 Joel Brobecker <brobecker@gnat.com>
* dwarf2read.c (dwarf2_flag_true_p): New function.
(die_is_declaration): Use the function above. Add some comments.
2004-04-19 Mark Kettenis <kettenis@gnu.org>
* sparcnbsd-tdep.c (_initialize_sparnbsd_tdep): Specify

26
gdb/dwarf2read.c
View file

@ -732,6 +732,9 @@ static void set_cu_language (unsigned int, struct dwarf2_cu *);
static struct attribute *dwarf2_attr (struct die_info *, unsigned int,
struct dwarf2_cu *);
static int dwarf2_flag_true_p (struct die_info *die, unsigned name,
struct dwarf2_cu *cu);
static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu);
static struct die_info *die_specification (struct die_info *die,
@ -5549,11 +5552,30 @@ dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu)
return NULL;
}
/* Return non-zero iff the attribute NAME is defined for the given DIE,
and holds a non-zero value. This function should only be used for
DW_FORM_flag attributes. */
static int
dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu)
{
struct attribute *attr = dwarf2_attr (die, name, cu);
return (attr && DW_UNSND (attr));
}
static int
die_is_declaration (struct die_info *die, struct dwarf2_cu *cu)
{
return (dwarf2_attr (die, DW_AT_declaration, cu)
&& ! dwarf2_attr (die, DW_AT_specification, cu));
/* A DIE is a declaration if it has a DW_AT_declaration attribute
which value is non-zero. However, we have to be careful with
DIEs having a DW_AT_specification attribute, because dwarf2_attr()
(via dwarf2_flag_true_p) follows this attribute. So we may
end up accidently finding a declaration attribute that belongs
to a different DIE referenced by the specification attribute,
even though the given DIE does not have a declaration attribute. */
return (dwarf2_flag_true_p (die, DW_AT_declaration, cu)
&& dwarf2_attr (die, DW_AT_specification, cu) == NULL);
}
/* Return the die giving the specification for DIE, if there is