From 15a0697c70e14d6277e26f6fa21898be5a8f6ff8 Mon Sep 17 00:00:00 2001 From: Archie Date: Sun, 21 Aug 2022 23:18:20 -0500 Subject: [PATCH] Adding check for BLIF names command input plane size. --- frontends/blif/blifparse.cc | 9 ++++++++- tests/blif/bug3385.ys | 9 +++++++++ 2 files changed, 17 insertions(+), 1 deletion(-) create mode 100644 tests/blif/bug3385.ys diff --git a/frontends/blif/blifparse.cc b/frontends/blif/blifparse.cc index 73d1f0ea7..52742660e 100644 --- a/frontends/blif/blifparse.cc +++ b/frontends/blif/blifparse.cc @@ -21,6 +21,8 @@ YOSYS_NAMESPACE_BEGIN +const int lut_input_plane_limit = 12; + static bool read_next_line(char *&buffer, size_t &buffer_size, int &line_count, std::istream &f) { string strbuf; @@ -513,6 +515,11 @@ void parse_blif(RTLIL::Design *design, std::istream &f, IdString dff_name, bool sopmode = -1; lastcell = sopcell; } + else if (input_sig.size() > lut_input_plane_limit) + { + err_reason = stringf("names' input plane must have fewer than 13 signals."); + goto error_with_reason; + } else { RTLIL::Cell *cell = module->addCell(NEW_ID, ID($lut)); @@ -576,7 +583,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, IdString dff_name, bool if (lutptr) { - if (input_len > 12) + if (input_len > lut_input_plane_limit) goto error; for (int i = 0; i < (1 << input_len); i++) { diff --git a/tests/blif/bug3385.ys b/tests/blif/bug3385.ys new file mode 100644 index 000000000..e1e45983d --- /dev/null +++ b/tests/blif/bug3385.ys @@ -0,0 +1,9 @@ +logger -expect error "Syntax error in line 4: names' input plane must have fewer than 13 signals." 1 +read_blif <