diff options
| author | Sverker Eriksson <[email protected]> | 2016-05-20 15:56:56 +0200 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2016-05-25 14:29:30 +0200 |
| commit | dcaa52d75e3bcbc808696597a34f2fca5677fff9 (patch) | |
| tree | e2ea3b21d680442d31dbaaf51886b682b6f4e410 /erts/emulator/beam/bif.c | |
| parent | f9cb80861f169743a96099a06d68149a91f18dfa (diff) | |
| download | otp-dcaa52d75e3bcbc808696597a34f2fca5677fff9.tar.gz otp-dcaa52d75e3bcbc808696597a34f2fca5677fff9.tar.bz2 otp-dcaa52d75e3bcbc808696597a34f2fca5677fff9.zip | |
erts: Make erlang:halt/2 truncate string arg
if too long.
Diffstat (limited to 'erts/emulator/beam/bif.c')
| -rw-r--r-- | erts/emulator/beam/bif.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c index 81477422ff..21763edc5b 100644 --- a/erts/emulator/beam/bif.c +++ b/erts/emulator/beam/bif.c @@ -3838,7 +3838,7 @@ BIF_RETTYPE display_nl_0(BIF_ALIST_0) #define HALT_MSG_SIZE 200 -static char halt_msg[HALT_MSG_SIZE]; +static char halt_msg[HALT_MSG_SIZE+1]; /* stop the system with exit code and flags */ BIF_RETTYPE halt_2(BIF_ALIST_2) @@ -3892,9 +3892,12 @@ BIF_RETTYPE halt_2(BIF_ALIST_2) else if (is_string(BIF_ARG_1) || BIF_ARG_1 == NIL) { Sint i; - if ((i = intlist_to_buf(BIF_ARG_1, halt_msg, HALT_MSG_SIZE-1)) < 0) { - goto error; - } + if ((i = intlist_to_buf(BIF_ARG_1, halt_msg, HALT_MSG_SIZE)) == -1) { + goto error; + } + if (i == -2) /* truncated string */ + i = HALT_MSG_SIZE; + ASSERT(i >= 0 && i <= HALT_MSG_SIZE); halt_msg[i] = '\0'; VERBOSE(DEBUG_SYSTEM, ("System halted by BIF halt(%T, %T)\n", BIF_ARG_1, BIF_ARG_2)); |