Fix memsan build with clang 11
Memsan build was reporting a false positive use of uninitialised memory
in x509_crt.c on a struct filled by an _stat function call. According to
the man pages, the element reported has to be filled in by the call, so
to be safe, and keep memsan happy, zero the struct first.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/ChangeLog.d/fix_memsan_build_clang11.txt b/ChangeLog.d/fix_memsan_build_clang11.txt
new file mode 100644
index 0000000..3f5cc05
--- /dev/null
+++ b/ChangeLog.d/fix_memsan_build_clang11.txt
@@ -0,0 +1,2 @@
+Changes
+ * Fix memsan build false positive in x509_crt.c with clang 11
diff --git a/library/x509_crt.c b/library/x509_crt.c
index a623c57..0aa4f4c 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -1629,6 +1629,8 @@
}
#endif /* MBEDTLS_THREADING_C */
+ memset( &sb, 0, sizeof( sb ) );
+
while( ( entry = readdir( dir ) ) != NULL )
{
snp_ret = mbedtls_snprintf( entry_name, sizeof entry_name,
