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| author | johannst <johannes.stoelp@gmail.com> | 2021-03-14 21:08:25 +0100 |
|---|---|---|
| committer | johannst <johannes.stoelp@gmail.com> | 2021-03-14 21:08:25 +0100 |
| commit | 877b4b9889a3ba5e935373580fefaf9d747001ec (patch) | |
| tree | c44c5a934ab67ddee78f3ce36f90edaec643cecf | |
| parent | e2e53897fe0d9d701622bec857e356be11d9c4f2 (diff) | |
| download | dynld-877b4b9889a3ba5e935373580fefaf9d747001ec.tar.gz dynld-877b4b9889a3ba5e935373580fefaf9d747001ec.zip | |
pfmt: added upper limit for stack local buffer
| -rw-r--r-- | include/io.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/io.h b/include/io.h index d9a1ae1..4f61cbf 100644 --- a/include/io.h +++ b/include/io.h @@ -8,15 +8,17 @@ #include <asm/unistd.h> // `pfmt` uses fixed-size buffer on the stack for formating the message -// (since we don't impl buffered I/O). +// (for simplicity and since we don't impl buffered I/O). // // Size can be re-configured by defining `MAX_PRINTF_LEN` before including // `io.h`. // -// NOTE: This allows to specify an arbitrarily large buffer on the stack, but -// for the purpose of this study that's fine, we are cautious. +// NOTE: This allows to specify a large buffer on the stack, but for +// the purpose of this study that's fine, we are cautious. #if !defined(MAX_PRINTF_LEN) # define MAX_PRINTF_LEN 128 +#elif MAX_PRINTF_LEN > 512 +# error MAX_PRINTF_LEN is limited by 512! #endif #define FD_STDOUT 1 |