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Add some library functions from SV-COMP #1242

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merged 10 commits into from
Nov 9, 2023
Merged

Add some library functions from SV-COMP #1242

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d5584ba
Add `__VERIFIER_nondet_size_t`
michael-schwarz Nov 8, 2023
9a06289
Add `__builtin_memcmp`
michael-schwarz Nov 8, 2023
67c8d9b
Add `__builtin_strlen`
michael-schwarz Nov 8, 2023
24aca67
Add `__fread_unlocked_*`
michael-schwarz Nov 8, 2023
8972bd8
Fix typo
michael-schwarz Nov 8, 2023
b3ef062
_Exit / _exit
michael-schwarz Nov 8, 2023
2fc6220
`__assert`
michael-schwarz Nov 8, 2023
c4353f9
Move `_exit` to C, as C usually takes precedence over posix for us
michael-schwarz Nov 8, 2023
dd3de9e
Move `_exit` back
michael-schwarz Nov 9, 2023
39a9427
Move `fread_unlocked` to glibc
michael-schwarz Nov 9, 2023
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11 changes: 10 additions & 1 deletion src/analyses/libraryFunctions.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ let c_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
("__builtin_strncat", special [__ "dest" [r; w]; __ "src" [r]; __ "n" []] @@ fun dest src n -> Strcat { dest; src; n = Some n; });
("__builtin___strncat_chk", special [__ "dest" [r; w]; __ "src" [r]; __ "n" []; drop "os" []] @@ fun dest src n -> Strcat { dest; src; n = Some n; });
("memcmp", unknown [drop "s1" [r]; drop "s2" [r]; drop "n" []]);
("__builtin_memcmp", unknown [drop "s1" [r]; drop "s2" [r]; drop "n" []]);
("memchr", unknown [drop "s" [r]; drop "c" []; drop "n" []]);
("asctime", unknown ~attrs:[ThreadUnsafe] [drop "time_ptr" [r_deep]]);
("fclose", unknown [drop "stream" [r_deep; w_deep; f_deep]]);
Expand All @@ -51,6 +52,7 @@ let c_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
("putc", unknown [drop "ch" []; drop "stream" [r_deep; w_deep]]);
("fputs", unknown [drop "str" [r]; drop "stream" [r_deep; w_deep]]);
("fread", unknown [drop "buffer" [w]; drop "size" []; drop "count" []; drop "stream" [r_deep; w_deep]]);
("fread_unlocked", unknown ~attrs:[ThreadUnsafe] [drop "buffer" [w]; drop "size" []; drop "count" []; drop "stream" [r_deep; w_deep]]);
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("fseek", unknown [drop "stream" [r_deep; w_deep]; drop "offset" []; drop "origin" []]);
("ftell", unknown [drop "stream" [r_deep]]);
("fwrite", unknown [drop "buffer" [r]; drop "size" []; drop "count" []; drop "stream" [r_deep; w_deep]]);
Expand All @@ -62,6 +64,7 @@ let c_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
("localeconv", unknown ~attrs:[ThreadUnsafe] []);
("localtime", unknown ~attrs:[ThreadUnsafe] [drop "time" [r]]);
("strlen", special [__ "s" [r]] @@ fun s -> Strlen s);
("__builtin_strlen", special [__ "s" [r]] @@ fun s -> Strlen s);
("strstr", special [__ "haystack" [r]; __ "needle" [r]] @@ fun haystack needle -> Strstr { haystack; needle; });
("strcmp", special [__ "s1" [r]; __ "s2" [r]] @@ fun s1 s2 -> Strcmp { s1; s2; n = None; });
("strtok", unknown ~attrs:[ThreadUnsafe] [drop "str" [r; w]; drop "delim" [r]]);
Expand Down Expand Up @@ -146,6 +149,8 @@ let c_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
("atomic_flag_test_and_set_explicit", unknown [drop "obj" [r; w]; drop "order" []]);
("atomic_load", unknown [drop "obj" [r]]);
("atomic_store", unknown [drop "obj" [w]; drop "desired" []]);
("_Exit", special [drop "status" []] @@ Abort);
("_exit", special [drop "status" []] @@ Abort);
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]

(** C POSIX library functions.
Expand Down Expand Up @@ -335,7 +340,6 @@ let posix_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
("regexec", unknown [drop "preg" [r_deep]; drop "string" [r]; drop "nmatch" []; drop "pmatch" [w_deep]; drop "eflags" []]);
("regfree", unknown [drop "preg" [f_deep]]);
("ffs", unknown [drop "i" []]);
("_exit", special [drop "status" []] Abort);
("execvp", unknown [drop "file" [r]; drop "argv" [r_deep]]);
("execl", unknown (drop "path" [r] :: drop "arg" [r] :: VarArgs (drop' [r])));
("statvfs", unknown [drop "path" [r]; drop "buf" [w]]);
Expand Down Expand Up @@ -505,6 +509,7 @@ let gcc_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
("__builtin_unreachable", special' [] @@ fun () -> if get_bool "sem.builtin_unreachable.dead_code" then Abort else Unknown); (* https://github.com/sosy-lab/sv-benchmarks/issues/1296 *)
("__assert_rtn", special [drop "func" [r]; drop "file" [r]; drop "line" []; drop "exp" [r]] @@ Abort); (* MacOS's built-in assert *)
("__assert_fail", special [drop "assertion" [r]; drop "file" [r]; drop "line" []; drop "function" [r]] @@ Abort); (* gcc's built-in assert *)
("__assert", special [drop "assertion" [r]; drop "file" [r]; drop "line" []] @@ Abort); (* header says: The following is not at all used here but needed for standard compliance. *)
("__builtin_return_address", unknown [drop "level" []]);
("__builtin___sprintf_chk", unknown (drop "s" [w] :: drop "flag" [] :: drop "os" [] :: drop "fmt" [r] :: VarArgs (drop' [r])));
("__builtin_add_overflow", unknown [drop "a" []; drop "b" []; drop "c" [w]]);
Expand Down Expand Up @@ -576,6 +581,9 @@ let glibc_desc_list: (string * LibraryDesc.t) list = LibraryDsl.[
("__fgets_chk", unknown [drop "__s" [w]; drop "__size" []; drop "__n" []; drop "__stream" [r_deep; w_deep]]);
("__fread_alias", unknown [drop "__ptr" [w]; drop "__size" []; drop "__n" []; drop "__stream" [r_deep; w_deep]]);
("__fread_chk", unknown [drop "__ptr" [w]; drop "__ptrlen" []; drop "__size" []; drop "__n" []; drop "__stream" [r_deep; w_deep]]);
("__fread_unlocked_alias", unknown ~attrs:[ThreadUnsafe] [drop "__ptr" [w]; drop "__size" []; drop "__n" []; drop "__stream" [r_deep; w_deep]]);
("__fread_unlocked_chk", unknown ~attrs:[ThreadUnsafe] [drop "__ptr" [w]; drop "__ptrlen" []; drop "__size" []; drop "__n" []; drop "__stream" [r_deep; w_deep]]);
("__fread_unlocked_chk_warn", unknown ~attrs:[ThreadUnsafe] [drop "__ptr" [w]; drop "__ptrlen" []; drop "__size" []; drop "__n" []; drop "__stream" [r_deep; w_deep]]);
("__read_chk", unknown [drop "__fd" []; drop "__buf" [w]; drop "__nbytes" []; drop "__buflen" []]);
("__read_alias", unknown [drop "__fd" []; drop "__buf" [w]; drop "__nbytes" []]);
("__readlink_chk", unknown [drop "path" [r]; drop "buf" [w]; drop "len" []; drop "buflen" []]);
Expand Down Expand Up @@ -972,6 +980,7 @@ let svcomp_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
("__VERIFIER_atomic_end", special [] @@ Unlock verifier_atomic);
("__VERIFIER_nondet_loff_t", unknown []); (* cannot give it in sv-comp.c without including stdlib or similar *)
("__VERIFIER_nondet_int", unknown []); (* declare invalidate actions to prevent invalidating globals when extern in regression tests *)
("__VERIFIER_nondet_size_t", unknown []); (* cannot give it in sv-comp.c without including stdlib or similar *)
]

let ncurses_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
Expand Down
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