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Use gdbarch obstack to allocate the TYPE_NAME string in arch_type 

Since the type whose name is being set is now being allocated on the
gdbarch obstack, we should allocate its TYPE_NAME on the obstack too.
This reduces the number of individual valgrind warnings for the command
"gdb gdb" from ~300 to ~150.

Tested on x86_64-unknown-linux-gnu.

gdb/ChangeLog:

	* gdb_obstack.h (obstack_strdup): Declare.
	* gdb_obstack.c (obstack_strdup): Define.
	* gdbarch.sh (gdbarch_obstack_strdup): Declare and define.
	* gdbarch.c: Regenerate.
	* gdbarch.h: Regenerate.
	* gdbtypes.c (arch_type): Use gdbarch_obstack_strdup.
This commit is contained in:
Patrick Palka 2015-08-29 18:07:50 -04:00
parent eed8b28a07
commit 6c214e7cb3
7 changed files with 51 additions and 1 deletions
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9
gdb/ChangeLog
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@ -1,3 +1,12 @@
2015-09-02 Patrick Palka <patrick@parcs.ath.cx>
* gdb_obstack.h (obstack_strdup): Declare.
* gdb_obstack.c (obstack_strdup): Define.
* gdbarch.sh (gdbarch_obstack_strdup): Declare and define.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbtypes.c (arch_type): Use gdbarch_obstack_strdup.
2015-09-02 Patrick Palka <patrick@parcs.ath.cx>
* gdbtypes.c (copy_type_recursive): Update documentation.

10
gdb/gdb_obstack.c
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@ -45,3 +45,13 @@ obconcat (struct obstack *obstackp, ...)
return obstack_finish (obstackp);
}
/* See gdb_obstack.h. */
char *
obstack_strdup (struct obstack *obstackp, const char *string)
{
char *obstring = obstack_alloc (obstackp, strlen (string) + 1);
strcpy (obstring, string);
return obstring;
}

5
gdb/gdb_obstack.h
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@ -58,4 +58,9 @@
extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL;
/* Duplicate STRING, returning an equivalent string that's allocated on the
obstack OBSTACKP. */
extern char *obstack_strdup (struct obstack *obstackp, const char *string);
#endif

8
gdb/gdbarch.c
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@ -449,6 +449,14 @@ gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
return data;
}
/* See gdbarch.h. */
char *
gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
{
return obstack_strdup (arch->obstack, string);
}
/* Free a gdbarch struct. This should never happen in normal
operation --- once you've created a gdbarch, you keep it around.

5
gdb/gdbarch.h
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@ -1618,6 +1618,11 @@ extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
/* Duplicate STRING, returning an equivalent string that's allocated on the
obstack associated with GDBARCH. The string is freed when the corresponding
architecture is also freed. */
extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
/* Helper function. Force an update of the current architecture.

13
gdb/gdbarch.sh
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@ -1486,6 +1486,11 @@ extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
/* Duplicate STRING, returning an equivalent string that's allocated on the
obstack associated with GDBARCH. The string is freed when the corresponding
architecture is also freed. */
extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
/* Helper function. Force an update of the current architecture.
@ -1791,6 +1796,14 @@ gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
return data;
}
/* See gdbarch.h. */
char *
gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
{
return obstack_strdup (arch->obstack, string);
}
/* Free a gdbarch struct. This should never happen in normal
operation --- once you've created a gdbarch, you keep it around.

2
gdb/gdbtypes.c
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@ -4549,7 +4549,7 @@ arch_type (struct gdbarch *gdbarch,
TYPE_LENGTH (type) = length;
if (name)
TYPE_NAME (type) = xstrdup (name);
TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name);
return type;
}