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cppfiles.c (read_name_map): Return null if open () fails.

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* cppfiles.c (read_name_map): Return null if open () fails.
        (remap_filename): Simplify logic.  Add ICE if it doesn't work
        as expected. Perform secondary lookup attempt on base filename
        only.

From-SVN: r38227
This commit is contained in:
Neil Booth 2000-12-13 19:20:14 +00:00 committed by Neil Booth
parent a4377974da
commit 8767c8949a
2 changed files with 29 additions and 28 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2000-12-13 Neil Booth <neil@daikokuya.demon.co.uk>
* cppfiles.c (read_name_map): Return null if open () fails.
(remap_filename): Simplify logic. Add ICE if it doesn't work
as expected. Perform secondary lookup attempt on base filename
only.
Wed Dec 13 19:48:04 MET 2000 Jan hubicka <jh@suse.cz>
* flow.c (notice_stack_pointer_modification_1): Notice midifications

50
gcc/cppfiles.c
View File

@ -859,6 +859,7 @@ read_name_map (pfile, dirname)
char *name;
FILE *f;
/* Check the cache of directories, and mappings in their remap file. */
for (map_list_ptr = CPP_OPTION (pfile, map_list); map_list_ptr;
map_list_ptr = map_list_ptr->map_list_next)
if (! strcmp (map_list_ptr->map_list_name, dirname))
@ -867,6 +868,8 @@ read_name_map (pfile, dirname)
map_list_ptr = ((struct file_name_map_list *)
xmalloc (sizeof (struct file_name_map_list)));
map_list_ptr->map_list_name = xstrdup (dirname);
/* The end of the list ends in NULL. */
map_list_ptr->map_list_map = NULL;
name = (char *) alloca (strlen (dirname) + strlen (FILE_NAME_MAP_FILE) + 2);
@ -875,9 +878,9 @@ read_name_map (pfile, dirname)
strcat (name, "/");
strcat (name, FILE_NAME_MAP_FILE);
f = fopen (name, "r");
if (!f)
map_list_ptr->map_list_map = (struct file_name_map *)-1;
else
/* Silently return NULL if we cannot open. */
if (f)
{
int ch;
int dirlen = strlen (dirname);
@ -920,6 +923,7 @@ read_name_map (pfile, dirname)
fclose (f);
}
/* Add this information to the cache. */
map_list_ptr->map_list_next = CPP_OPTION (pfile, map_list);
CPP_OPTION (pfile, map_list) = map_list_ptr;
@ -935,15 +939,15 @@ remap_filename (pfile, name, loc)
struct file_name_list *loc;
{
struct file_name_map *map;
const char *from, *p, *dir;
const char *from, *p;
char *dir;
if (! loc->name_map)
loc->name_map = read_name_map (pfile,
loc->name
? loc->name : ".");
if (loc->name_map == (struct file_name_map *)-1)
return name;
{
loc->name_map = read_name_map (pfile, loc->name ? loc->name : ".");
if (! loc->name_map)
return name;
}
from = name + strlen (loc->name) + 1;
@ -957,29 +961,19 @@ remap_filename (pfile, name, loc)
/usr/include/sys/header.gcc. */
p = strrchr (name, '/');
if (!p)
p = name;
if (loc && loc->name
&& strlen (loc->name) == (size_t) (p - name)
&& !strncmp (loc->name, name, p - name))
/* FILENAME is in SEARCHPTR, which we've already checked. */
return name;
/* We know p != name as absolute paths don't call remap_filename. */
if (p == name)
{
dir = ".";
from = name;
}
else
{
char * newdir = (char *) alloca (p - name + 1);
memcpy (newdir, name, p - name);
newdir[p - name] = '\0';
dir = newdir;
from = p + 1;
}
cpp_ice (pfile, "absolute file name in remap_filename");
dir = (char *) alloca (p - name + 1);
memcpy (dir, name, p - name);
dir[p - name] = '\0';
from = p + 1;
for (map = read_name_map (pfile, dir); map; map = map->map_next)
if (! strcmp (map->map_from, name))
if (! strcmp (map->map_from, from))
return map->map_to;
return name;