replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[sanitizer] Improve getaddrinfo interceptor. 

llvm-svn: 182775
This commit is contained in:
Evgeniy Stepanov 2013-05-28 14:34:37 +00:00
parent dd0780f81c
commit 40d7ed5d1e
2 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
compiler-rt/lib/msan/lit_tests/getaddrinfo-positive.cc
View File

@ -8,10 +8,14 @@
#include <netdb.h>
#include <stdlib.h>
volatile int z;
int main(void) {
struct addrinfo *ai;
struct addrinfo hint;
int res = getaddrinfo("localhost", NULL, &hint, &ai);
int res = getaddrinfo("localhost", NULL, NULL, &ai);
if (ai) z = 1; // OK
res = getaddrinfo("localhost", NULL, &hint, &ai);
// CHECK: UMR in __interceptor_getaddrinfo at offset 0 inside
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK: #0 {{.*}} in main {{.*}}getaddrinfo-positive.cc:[[@LINE-3]]

5
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
View File

@ -760,10 +760,11 @@ INTERCEPTOR(int, getaddrinfo, char *node, char *service,
if (hints)
COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo));
int res = REAL(getaddrinfo)(node, service, hints, out);
if (res == 0) {
if (res == 0 && out) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out));
struct __sanitizer_addrinfo *p = *out;
while (p) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_addrinfo));
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
if (p->ai_addr)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, struct_sockaddr_sz);
if (p->ai_canonname)