diff options
| -rw-r--r-- | experimental/persistent_demo/persistent_demo.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/experimental/persistent_demo/persistent_demo.c b/experimental/persistent_demo/persistent_demo.c index 0b1e2989..d091febe 100644 --- a/experimental/persistent_demo/persistent_demo.c +++ b/experimental/persistent_demo/persistent_demo.c @@ -33,6 +33,7 @@ int main(int argc, char** argv) { + ssize_t len; /* how much input did we read? */ char buf[100]; /* Example-only buffer, you'd replace it with other global or local variables appropriate for your use case. */ @@ -57,11 +58,15 @@ int main(int argc, char** argv) { Beware of reading from buffered FILE* objects such as stdin. Use raw file descriptors or call fopen() / fdopen() in every pass. */ - read(0, buf, 100); + len = read(0, buf, 100); /* STEP 3: This is where we'd call the tested library on the read data. We just have some trivial inline code that faults on 'foo!'. */ + /* do we have enough data? */ + if (len < 4) + return 0; + if (buf[0] == 'f') { printf("one\n"); if (buf[1] == 'o') { |