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465babb635
With input such as
%token<fl> yVL_CLOCK "/*verilator sc_clock*/"
we generate
yVL_CLOCK = 610, /* "/*verilator sc_clock*/" */
which is invalid since the comment will actually be closed on the
first "*/". Let's turn "*/" into "*\/" to avoid this. But GCC will
also warn about "/*" inside a comment, so let's "escape" it too.
Reported by Huang Rui.
https://github.com/akimd/bison/issues/38
* data/skeletons/c-like.m4 (_b4_comment): Escape comment delimiters in
comments.
* tests/input.at (Torturing the Scanner): Check thes cases.
* tests/m4.at: New.
47 lines
1.2 KiB
Plaintext
47 lines
1.2 KiB
Plaintext
# Basic m4 macros. -*- Autotest -*-
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# Copyright (C) 2020 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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AT_BANNER([[M4 Macros.]])
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AT_SETUP([Generating Comments])
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AT_DATA([input.y],
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[%%
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exp:
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])
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AT_DATA([input.m4],
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[[m4@&t@_include(b4_skeletonsdir/[c.m4])
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b4_output_begin([output.txt])
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b4_comment([["/* () */"]])
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b4_comment([["/* ( */"]])
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b4_comment([["/* ) */"]])
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b4_output_end([output.txt])
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]])
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AT_BISON_CHECK([-S ./input.m4 input.y])
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AT_CHECK([cat output.txt], [],
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[/* "/\* () *\/" */
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/* "/\* ( *\/" */
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/* "/\* ) *\/" */
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])
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AT_CLEANUP
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