Bug #6173
GCC12: error: array subscript 1 is outside array bounds
0%
Description
See: https://aur.archlinux.org/packages/tvheadend-git
In file included from src/tcp.c:32:
In function 'ip_check_is_any_v6',
inlined from 'ip_check_is_any' at src/tcp.h:109:46,
inlined from 'ip_check_is_local_address' at src/tcp.c:89:17:
src/tcp.h:104:57: error: array subscript 1 is outside array bounds of 'const struct sockaddr_storage0' [-Werror=array-bounds]
104 | { return ((uint64_t *)IP_AS_V6(address, addr).s6_addr)[0] == ((uint64_t *)(&in6addr_any.s6_addr))[0] &&
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
src/tcp.h: In function 'ip_check_is_local_address':
src/tcp.h:107:19: note: at offset 8 into object 'address' of size 8
107 | static inline int ip_check_is_any(const struct sockaddr_storage *address)
| ^~~~~~~~~~~~~
In function 'ip_check_is_any_v6',
inlined from 'ip_check_is_any' at src/tcp.h:109:46,
inlined from 'ip_check_is_local_address' at src/tcp.c:89:17:
src/tcp.h:105:57: error: array subscript 2 is outside array bounds of 'const struct sockaddr_storage0' [-Werror=array-bounds]
105 | ((uint64_t *)IP_AS_V6(address, addr).s6_addr)[1] == ((uint64_t *)(&in6addr_any.s6_addr))[1]; }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
src/tcp.h: In function 'ip_check_is_local_address':
src/tcp.h:107:19: note: at offset 16 into object 'address' of size 8
107 | static inline int ip_check_is_any(const struct sockaddr_storage *address)
| ^~~~~~~~~~~~~
In function 'ip_check_equal_v6',
inlined from 'ip_check_equal' at src/tcp.h:78:42,
inlined from 'ip_check_is_local_address' at src/tcp.c:96:26:
src/tcp.h:71:53: error: array subscript 1 is outside array bounds of 'const struct sockaddr_storage0' [-Werror=array-bounds]
71 | { return ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[0] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[0] &&
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
src/tcp.h: In function 'ip_check_is_local_address':
src/tcp.h:74:19: note: at offset 8 into object 'a' of size 8
74 | static inline int ip_check_equal
| ^~~~~~~~~~~~
In function 'ip_check_equal_v6',
inlined from 'ip_check_equal' at src/tcp.h:78:42,
inlined from 'ip_check_is_local_address' at src/tcp.c:96:26:
src/tcp.h:71:99: error: array subscript 1 is outside array bounds of 'const struct sockaddr_storage0' [-Werror=array-bounds]
71 | { return ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[0] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[0] &&
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
src/tcp.h: In function 'ip_check_is_local_address':
src/tcp.h:74:19: note: at offset 8 into object 'b' of size 8
74 | static inline int ip_check_equal
| ^~~~~~~~~~~~
In function 'ip_check_equal_v6',
inlined from 'ip_check_equal' at src/tcp.h:78:42,
inlined from 'ip_check_is_local_address' at src/tcp.c:96:26:
src/tcp.h:72:53: error: array subscript 2 is outside array bounds of 'const struct sockaddr_storage0' [-Werror=array-bounds]
72 | ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[1] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[1]; }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
src/tcp.h: In function 'ip_check_is_local_address':
src/tcp.h:74:19: note: at offset 16 into object 'a' of size 8
74 | static inline int ip_check_equal
| ^~~~~~~~~~~~
In function 'ip_check_equal_v6',
inlined from 'ip_check_equal' at src/tcp.h:78:42,
inlined from 'ip_check_is_local_address' at src/tcp.c:96:26:
src/tcp.h:72:99: error: array subscript 2 is outside array bounds of 'const struct sockaddr_storage0' [-Werror=array-bounds]
72 | ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[1] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[1]; }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
src/tcp.h: In function 'ip_check_is_local_address':
src/tcp.h:74:19: note: at offset 16 into object 'b' of size 8
74 | static inline int ip_check_equal
History
Updated by Flole Systems over 2 years ago
- Status changed from New to Invalid
You're using an unofficial/modified build. Contact the maintainer for support.
Updated by Dirk Diggler over 2 years ago
Flole Systems wrote:
You're using an unofficial/modified build. Contact the maintainer for support.
Hey, not so fast. I get the same error when compiling the current github source!
Updated by Flole Systems over 2 years ago
Then feel free to update this so it's a proper bug report (including which OS and compiler is used and steps to reproduce) then it can be re-opened, but don't expect anyone to work on it as it's building perfectly fine on 24 different systems. If you provide a PR though it will be reviewed and merged eventually.
Updated by Dirk Diggler over 2 years ago
Operating System: Arch Linux
Kernel: Linux 5.17.9-arch1-1
Architecture: x86-64
gcc (GCC) 12.1.0
Steps: ./configure, make
Updated by Dirk Diggler over 2 years ago
Hey, compiler version was a good hint. I installed older GCC 11 version, which works.
So i don't know if tvheadend code has to be fixed for GCC 12?
Updated by Flole Systems over 2 years ago
- Subject changed from error: array subscript 1 is outside array bounds to GCC12: error: array subscript 1 is outside array bounds
- Status changed from Invalid to New
Updated by Volker Schmidt over 2 years ago
Found a wuerg-around (err, german-IT-slang) - a work around for GCC 12.
Add this for your additions to CFLAGS (PKGBUILD / environment / Makefile):
export CFLAGS="$CFLAGS -Wno-error=array-bounds -Wno-error=address"
tvheadend now builds.
Updated by Flole Systems about 2 years ago
That is not a solution though, there are several things wrong with that code. For example in the ip_check_equal_v6 (and probably in others aswell) there is a pointer to a pointer which is then casted to an uint64_t* and then offset 1 of that is accessed. It will never work like this, and basically same thing for IPv4. Someone needs to go through all usages and figure out where it needs to be changed so that always a pointer is passed and the & needs to be removed from the IP_AS_V* aswell.
Also for IPv6 there is a strict aliasing violation, even with those fixes the comparison like that is undefined behaviour.
Updated by Georg Schukat about 2 years ago
OS: openSuse Tumbleweed (rolling release)
Kernel: 5.19.13-1-default
gcc: (SUSE Linux) 12.2.1 20220830
config: (if these were enabled make would run into other issues)
./configure --disable-tvhcsa --disable-libopus
same make fail:
CC src/tvhvfs.o CC src/access.o CC src/tcp.o In file included from src/tcp.c:32: In function ‘ip_check_is_any_v6’, inlined from ‘ip_check_is_any’ at src/tcp.h:109:46, inlined from ‘ip_check_is_local_address’ at src/tcp.c:89:17: src/tcp.h:104:57: error: array subscript 1 is outside array bounds of ‘const struct sockaddr_storage[0]’ [-Werror=array-bounds] 104 | { return ((uint64_t *)IP_AS_V6(address, addr).s6_addr)[0] == ((uint64_t *)(&in6addr_any.s6_addr))[0] && | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ src/tcp.h: In function ‘ip_check_is_local_address’: src/tcp.h:107:19: note: at offset 8 into object ‘address’ of size 8 107 | static inline int ip_check_is_any(const struct sockaddr_storage *address) | ^~~~~~~~~~~~~~~ In function ‘ip_check_is_any_v6’, inlined from ‘ip_check_is_any’ at src/tcp.h:109:46, inlined from ‘ip_check_is_local_address’ at src/tcp.c:89:17: src/tcp.h:105:57: error: array subscript 2 is outside array bounds of ‘const struct sockaddr_storage[0]’ [-Werror=array-bounds] 105 | ((uint64_t *)IP_AS_V6(address, addr).s6_addr)[1] == ((uint64_t *)(&in6addr_any.s6_addr))[1]; } | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ src/tcp.h: In function ‘ip_check_is_local_address’: src/tcp.h:107:19: note: at offset 16 into object ‘address’ of size 8 107 | static inline int ip_check_is_any(const struct sockaddr_storage *address) | ^~~~~~~~~~~~~~~ In function ‘ip_check_equal_v6’, inlined from ‘ip_check_equal’ at src/tcp.h:78:42, inlined from ‘ip_check_is_local_address’ at src/tcp.c:96:26: src/tcp.h:71:53: error: array subscript 1 is outside array bounds of ‘const struct sockaddr_storage[0]’ [-Werror=array-bounds] 71 | { return ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[0] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[0] && | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ src/tcp.h: In function ‘ip_check_is_local_address’: src/tcp.h:74:19: note: at offset 8 into object ‘a’ of size 8 74 | static inline int ip_check_equal | ^~~~~~~~~~~~~~ In function ‘ip_check_equal_v6’, inlined from ‘ip_check_equal’ at src/tcp.h:78:42, inlined from ‘ip_check_is_local_address’ at src/tcp.c:96:26: src/tcp.h:71:99: error: array subscript 1 is outside array bounds of ‘const struct sockaddr_storage[0]’ [-Werror=array-bounds] 71 | { return ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[0] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[0] && | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ src/tcp.h: In function ‘ip_check_is_local_address’: src/tcp.h:74:19: note: at offset 8 into object ‘b’ of size 8 74 | static inline int ip_check_equal | ^~~~~~~~~~~~~~ In function ‘ip_check_equal_v6’, inlined from ‘ip_check_equal’ at src/tcp.h:78:42, inlined from ‘ip_check_is_local_address’ at src/tcp.c:96:26: src/tcp.h:72:53: error: array subscript 2 is outside array bounds of ‘const struct sockaddr_storage[0]’ [-Werror=array-bounds] 72 | ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[1] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[1]; } | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ src/tcp.h: In function ‘ip_check_is_local_address’: src/tcp.h:74:19: note: at offset 16 into object ‘a’ of size 8 74 | static inline int ip_check_equal | ^~~~~~~~~~~~~~ In function ‘ip_check_equal_v6’, inlined from ‘ip_check_equal’ at src/tcp.h:78:42, inlined from ‘ip_check_is_local_address’ at src/tcp.c:96:26: src/tcp.h:72:99: error: array subscript 2 is outside array bounds of ‘const struct sockaddr_storage[0]’ [-Werror=array-bounds] 72 | ((uint64_t *)IP_AS_V6(a, addr).s6_addr)[1] == ((uint64_t *)IP_AS_V6(b, addr).s6_addr)[1]; } | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ src/tcp.h: In function ‘ip_check_is_local_address’: src/tcp.h:74:19: note: at offset 16 into object ‘b’ of size 8 74 | static inline int ip_check_equal | ^~~~~~~~~~~~~~ cc1: all warnings being treated as errors make[1]: *** [Makefile:718: /A/DEVE/tvheadend/build.linux/src/tcp.o] Fehler 1 make[1]: Verzeichnis „/A/DEVE/tvheadend“ wird verlassen make: *** [Makefile:110: ffmpeg_all] Fehler 2
Updated by Georg Schukat about 2 years ago
Volker Schmidt wrote:
Found a wuerg-around (err, german-IT-slang) - a work around for GCC 12.
Add this for your additions to CFLAGS (PKGBUILD / environment / Makefile):export CFLAGS="$CFLAGS -Wno-error=array-bounds -Wno-error=address"tvheadend now builds.
worked for me as well
Updated by Markus Bonet about 2 years ago
Is there any additional information needed to work on this bug?
Updated by Flole Systems about 2 years ago
- Status changed from New to Fixed
DonKult was kind enough to provide a fix on GitHub.
Updated by B C almost 2 years ago
since that fix I get the following error on gcc version 11.3.0 (Ubuntu 11.3.0-1ubuntu1~22.04)
CC src/htsmsg_binary.o
In file included from src/tcp.c:32:
In function ‘ip_check_is_any_v6’,
inlined from ‘ip_check_is_any’ at src/tcp.h:109:46,
inlined from ‘ip_check_is_local_address’ at src/tcp.c:89:17:
src/tcp.h:105:12: error: ‘__builtin_memcmp_eq’ specified bound 16 exceeds source size 8 [-Werror=stringop-overread]
105 | { return memcmp(IP_AS_V6(address, addr).s6_addr, in6addr_any.s6_addr, sizeof(in6addr_any.s6_addr)) == 0; }
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/tcp.h: In function ‘ip_check_is_local_address’:
src/tcp.h:107:19: note: source object declared here
107 | static inline int ip_check_is_any(const struct sockaddr_storage *address)
| ^~~~~~~~~~~~~
In file included from src/tcp.c:32:
In function ‘ip_check_equal_v6’,
inlined from ‘ip_check_equal’ at src/tcp.h:77:42,
inlined from ‘ip_check_is_local_address’ at src/tcp.c:96:26:
src/tcp.h:71:14: error: ‘__builtin_memcmp_eq’ specified bound 16 exceeds source size 8 [-Werror=stringop-overread]
71 | { return memcmp(IP_AS_V6(a, addr).s6_addr, IP_AS_V6(b, addr).s6_addr, sizeof(IP_AS_V6(a, addr).s6_addr)) == 0; }
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/tcp.h: In function ‘ip_check_is_local_address’:
src/tcp.h:73:19: note: source object declared here
73 | static inline int ip_check_equal
| ^~~~~~~~~~~~
CC src/htsmsg_binary2.o
CC src/htsmsg_json.o
cc1: all warnings being treated as errors
Updated by Jonas Lang almost 2 years ago
Same as #15 on Ubuntu 22.04 LTS x86_64 building with GCC 11.3.0