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| author | Bernhard Schommer <bernhardschommer@gmail.com> | 2016-08-17 08:35:21 +0200 |
|---|---|---|
| committer | Bernhard Schommer <bernhardschommer@gmail.com> | 2016-08-17 08:35:21 +0200 |
| commit | b08fd2ea809b87af8551ff6bc50e544209798d24 (patch) | |
| tree | 284f2b93e8b7c62ef95e8b48ec387e0cfa8397d7 /driver/Interp.ml | |
| parent | 6c70ceb179798478f29efda5358c4660c38b7392 (diff) | |
| download | compcert-kvx-b08fd2ea809b87af8551ff6bc50e544209798d24.tar.gz compcert-kvx-b08fd2ea809b87af8551ff6bc50e544209798d24.zip | |
Fixed issue with emulation of printf
The emulated printf in the interpreter did always return 0 instead
of the numbers of bytes printed.
Bug 19564
Diffstat (limited to 'driver/Interp.ml')
| -rw-r--r-- | driver/Interp.ml | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/driver/Interp.ml b/driver/Interp.ml index 5c2158ae..f42bed32 100644 --- a/driver/Interp.ml +++ b/driver/Interp.ml @@ -387,10 +387,12 @@ let do_external_function id sg ge w args m = match camlstring_of_coqstring id, args with | "printf", Vptr(b, ofs) :: args' -> extract_string m b ofs >>= fun fmt -> - print_string (do_printf m fmt args'); + let fmt' = do_printf m fmt args' in + let len = coqint_of_camlint (Int32.of_int (String.length fmt')) in + print_string fmt'; flush stdout; convert_external_args ge args sg.sig_args >>= fun eargs -> - Some(((w, [Event_syscall(id, eargs, EVint Int.zero)]), Vint Int.zero), m) + Some(((w, [Event_syscall(id, eargs, EVint len)]), Vint len), m) | _ -> None |