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Change line_table methods to return unique_xmalloc_ptr

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This changes the two new line_table methods to return
unique_xmalloc_ptr.  This removes a bit of manual memory management.

2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2/read.c (struct line_header) <file_full_name,
	file_file_name>: Return unique_xmalloc_ptr.
	(line_header::file_file_name): Update.
	(line_header::file_full_name): Update.
	(dw2_get_file_names_reader): Update.
	(macro_start_file): Update.

Change-Id: I9442dba43882fb26097d0770a291eea2b03913a4
This commit is contained in:
Tom Tromey
2020-02-08 13:40:54 -07:00
parent bb82240439
commit 0307581275
2 changed files with 29 additions and 17 deletions
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9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
2020-02-08 Tom Tromey <tom@tromey.com>
* dwarf2/read.c (struct line_header) <file_full_name,
file_file_name>: Return unique_xmalloc_ptr.
(line_header::file_file_name): Update.
(line_header::file_full_name): Update.
(dw2_get_file_names_reader): Update.
(macro_start_file): Update.
2020-02-08 Tom Tromey <tom@tromey.com>
* dwarf2/read.c (struct line_header) <file_full_name,

37
gdb/dwarf2/read.c
View File

@ -1078,13 +1078,14 @@ struct line_header
table. Use COMP_DIR as the name of the current directory of the
compilation. The result is allocated using xmalloc; the caller
is responsible for freeing it. */
char *file_full_name (int file, const char *comp_dir);
gdb::unique_xmalloc_ptr<char> file_full_name (int file,
const char *comp_dir);
/* Return file name relative to the compilation directory of file
number I in this object's file name table. The result is
allocated using xmalloc; the caller is responsible for freeing
it. */
char *file_file_name (int file);
gdb::unique_xmalloc_ptr<char> file_file_name (int file);
private:
/* The include_directories table. Note these are observing
@ -3405,7 +3406,8 @@ dw2_get_file_names_reader (const struct die_reader_specs *reader,
if (offset != 0)
qfn->file_names[0] = xstrdup (fnd.name);
for (int i = 0; i < lh->file_names_size (); ++i)
qfn->file_names[i + offset] = lh->file_full_name (i + 1, fnd.comp_dir);
qfn->file_names[i + offset] = lh->file_full_name (i + 1,
fnd.comp_dir).release ();
qfn->real_names = NULL;
lh_cu->v.quick->file_names = qfn;
@ -23754,7 +23756,7 @@ dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs)
/* Macro support. */
char *
gdb::unique_xmalloc_ptr<char>
line_header::file_file_name (int file)
{
/* Is the file number a valid index into the line header's file name
@ -23767,9 +23769,11 @@ line_header::file_file_name (int file)
{
const char *dir = fe->include_dir (this);
if (dir != NULL)
return concat (dir, SLASH_STRING, fe->name, (char *) NULL);
return gdb::unique_xmalloc_ptr<char> (concat (dir, SLASH_STRING,
fe->name,
(char *) NULL));
}
return xstrdup (fe->name);
return make_unique_xstrdup (fe->name);
}
else
{
@ -23784,23 +23788,24 @@ line_header::file_file_name (int file)
complaint (_("bad file number in macro information (%d)"),
file);
return xstrdup (fake_name);
return make_unique_xstrdup (fake_name);
}
}
char *
gdb::unique_xmalloc_ptr<char>
line_header::file_full_name (int file, const char *comp_dir)
{
/* Is the file number a valid index into the line header's file name
table? Remember that file numbers start with one, not zero. */
if (is_valid_file_index (file))
{
char *relative = file_file_name (file);
gdb::unique_xmalloc_ptr<char> relative = file_file_name (file);
if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL)
if (IS_ABSOLUTE_PATH (relative.get ()) || comp_dir == NULL)
return relative;
return reconcat (relative, comp_dir, SLASH_STRING,
relative, (char *) NULL);
return gdb::unique_xmalloc_ptr<char> (concat (comp_dir, SLASH_STRING,
relative.get (),
(char *) NULL));
}
else
return file_file_name (file);
@ -23814,7 +23819,7 @@ macro_start_file (struct dwarf2_cu *cu,
struct line_header *lh)
{
/* File name relative to the compilation directory of this source file. */
char *file_name = lh->file_file_name (file);
gdb::unique_xmalloc_ptr<char> file_name = lh->file_file_name (file);
if (! current_file)
{
@ -23824,13 +23829,11 @@ macro_start_file (struct dwarf2_cu *cu,
/* If we have no current file, then this must be the start_file
directive for the compilation unit's main source file. */
current_file = macro_set_main (macro_table, file_name);
current_file = macro_set_main (macro_table, file_name.get ());
macro_define_special (macro_table);
}
else
current_file = macro_include (current_file, line, file_name);
xfree (file_name);
current_file = macro_include (current_file, line, file_name.get ());
return current_file;
}