diff options
Diffstat (limited to 'erts/etc/common/erlc.c')
| -rw-r--r-- | erts/etc/common/erlc.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/erts/etc/common/erlc.c b/erts/etc/common/erlc.c index 09aca19e6c..b59453ab40 100644 --- a/erts/etc/common/erlc.c +++ b/erts/etc/common/erlc.c @@ -160,6 +160,9 @@ main(int argc, char** argv) env = get_env("ERLC_EMULATOR"); emulator = env ? env : get_default_emulator(argv[0]); + if (strlen(emulator) >= MAXPATHLEN) + error("Value of environment variable ERLC_EMULATOR is too large"); + /* * Allocate the argv vector to be used for arguments to Erlang. * Arrange for starting to pushing information in the middle of @@ -170,7 +173,7 @@ main(int argc, char** argv) * base of the eargv vector, and move it up later. */ - eargv_size = argc*4+100; + eargv_size = argc*6+100; eargv_base = (char **) emalloc(eargv_size*sizeof(char*)); eargv = eargv_base; eargc = 0; @@ -419,7 +422,7 @@ process_opt(int* pArgc, char*** pArgv, int offset) static void push_words(char* src) { - char sbuf[1024]; + char sbuf[MAXPATHLEN]; char* dst; dst = sbuf; @@ -595,7 +598,7 @@ error(char* format, ...) va_list ap; va_start(ap, format); - vsprintf(sbuf, format, ap); + erts_vsnprintf(sbuf, sizeof(sbuf), format, ap); va_end(ap); fprintf(stderr, "erlc: %s\n", sbuf); exit(1); @@ -624,6 +627,9 @@ get_default_emulator(char* progname) char sbuf[MAXPATHLEN]; char* s; + if (strlen(progname) >= sizeof(sbuf)) + return ERL_NAME; + strcpy(sbuf, progname); for (s = sbuf+strlen(sbuf); s >= sbuf; s--) { if (IS_DIRSEP(*s)) { |