diff options
| -rw-r--r-- | sys/src/cmd/cpu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/src/cmd/cpu.c b/sys/src/cmd/cpu.c index 3fb3a6d5e..f4083f315 100644 --- a/sys/src/cmd/cpu.c +++ b/sys/src/cmd/cpu.c @@ -430,6 +430,10 @@ readstr(int fd, char *str, int len) n = read(fd, str, 1); if(n < 0) return -1; + if(n == 0){ + werrstr("hung up"); + return -1; + } if(*str == '\0') return 0; str++; |