* [binutils-gdb] dlltool: sprintf sanitizer null destination pointer
@ 2023-08-03 11:51 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2023-08-03 11:51 UTC (permalink / raw)
To: bfd-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e2e7c5261311fd7d557769a73e1fbc496cd56d23
commit e2e7c5261311fd7d557769a73e1fbc496cd56d23
Author: Alan Modra <amodra@gmail.com>
Date: Thu Aug 3 08:15:12 2023 +0930
dlltool: sprintf sanitizer null destination pointer
* dlltool.c (gen_lib_file): Avoid bogus sanitizer error.
Diff:
---
binutils/dlltool.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/binutils/dlltool.c b/binutils/dlltool.c
index 142d43aff81..efa54f1bd72 100644
--- a/binutils/dlltool.c
+++ b/binutils/dlltool.c
@@ -3089,20 +3089,22 @@ gen_lib_file (int delay)
if (dontdeltemps < 2)
{
char *name;
+ size_t stub_len = strlen (TMP_STUB);
- name = xmalloc (strlen (TMP_STUB) + 10);
+ name = xmalloc (stub_len + 10);
+ memcpy (name, TMP_STUB, stub_len);
for (i = 0; (exp = d_exports_lexically[i]); i++)
{
/* Don't delete non-existent stubs for PRIVATE entries. */
if (exp->private)
continue;
- sprintf (name, "%s%05d.o", TMP_STUB, i);
+ sprintf (name + stub_len, "%05d.o", i);
if (unlink (name) < 0)
/* xgettext:c-format */
non_fatal (_("cannot delete %s: %s"), name, strerror (errno));
if (ext_prefix_alias)
{
- sprintf (name, "%s%05d.o", TMP_STUB, i + PREFIX_ALIAS_BASE);
+ sprintf (name + stub_len, "%05d.o", i + PREFIX_ALIAS_BASE);
if (unlink (name) < 0)
/* xgettext:c-format */
non_fatal (_("cannot delete %s: %s"), name, strerror (errno));
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