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Bug fix: uninitialized padding eliminated (#137)

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Lurker00 2024-09-17 22:29:47 +03:00 committed by GitHub
parent 0a20d69537
commit 515129cccc
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1 changed files with 13 additions and 8 deletions
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13
extend.c
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@ -49,17 +49,23 @@ int mode_add_get(struct sockaddr_ina *dst, int m)
{
// m < 0: get, m > 0: set, m == 0: delete
assert(m >= -1 && m < params.dp_count);
struct {
#pragma pack(push,4)
struct key_struct {
uint16_t port;
uint16_t pad0; // fill with 0 before use!
union {
struct in_addr i4;
struct in6_addr i6;
};
} key = { .port = dst->in.sin_port };
} key = { .port = dst->in.sin_port, .pad0 = 0 };
#pragma pack(pop)
#if defined(__GNUC__)
_Static_assert(offsetof(struct key_struct, i4) == sizeof(key.port)+sizeof(key.pad0), "key_struct");
#endif
time_t t = 0;
struct elem *val = 0;
int len = sizeof(dst->in.sin_port);
int len = offsetof(struct key_struct, i4);
if (dst->sa.sa_family == AF_INET) {
len += sizeof(dst->in.sin_addr);
@ -101,7 +107,6 @@ int mode_add_get(struct sockaddr_ina *dst, int m)
val->time = t;
return 0;
}
}