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* tests/output.at (AT_CHECK_OUTPUT): Another test, making sure

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bison fails when trying to output a parser and a header under the
same name.
* src/files.c (compute_output_file_names): Refuse when parser and
header have the same name.
This commit is contained in:
Akim Demaille
2002-03-04 18:06:42 +00:00
parent 5d08b24fba
commit 4eeb7bc9a2
5 changed files with 43 additions and 4 deletions
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8
ChangeLog
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@@ -1,3 +1,11 @@
2002-03-04 Akim Demaille <akim@epita.fr>
* tests/output.at (AT_CHECK_OUTPUT): Another test, making sure
bison fails when trying to output a parser and a header under the
same name.
* src/files.c (compute_output_file_names): Refuse when parser and
header have the same name.
2002-03-04 Akim Demaille <akim@epita.fr>
* src/reader.c (readgram): A missing `;' is a warning, not an

4
NEWS
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@@ -3,6 +3,10 @@ Bison News
Changes in version 1.33b:
* File name clashes are detected
$ bison foo.y -d -o foo.x
fatal error: header and parser would be both named `foo.x'
* A missing `;' ending a rule triggers a warning
In accordance with POSIX, and in agreement with other
Yacc implementations, Bison will mandate this semicolon in a near

17
src/files.c
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@@ -22,6 +22,7 @@
#include "system.h"
#include "getargs.h"
#include "quote.h"
#include "files.h"
#include "gram.h"
#include "error.h"
@@ -419,7 +420,7 @@ compute_base_names (void)
/* Computes the extensions from the grammar file name. */
filename_split (infile, &base, &tab, &ext);
if (ext && !yacc_flag)
compute_exts_from_gf (ext);
}
@@ -445,6 +446,20 @@ compute_output_file_names (void)
if (!spec_defines_file)
spec_defines_file = stringappend (full_base_name, header_extension);
if (defines_flag)
{
/* This is really Q&D, but I don't want to spend time on issues
which will be different with 1.50. */
const char *parser_filename = NULL;
if (spec_outfile)
parser_filename = spec_outfile;
else
parser_filename = stringappend (full_base_name, src_extension);
if (!strcmp (spec_defines_file, parser_filename))
fatal ("header and parser would be both named %s",
quote (parser_filename));
}
/* It the graph filename if not given, we create it. */
if (!spec_graph_file)
spec_graph_file = stringappend (short_base_name, ".vcg");

4
src/output.c
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@@ -1,7 +1,7 @@
/* Output the generated parsing program for bison,
Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001 Free Software
Foundation, Inc.
Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.

14
tests/output.at
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@@ -29,7 +29,7 @@ AT_DATA([$1],
foo: {};
]])
AT_CHECK([bison $3 $1], 0)
AT_CHECK([bison $3 $1])
AT_CHECK([ls $4], [], [ignore])
AT_CLEANUP
])
@@ -81,3 +81,15 @@ AT_CHECK_OUTPUT([foo.yy], [],
AT_CHECK_OUTPUT([foo.yy], [],
[-o foo.c++ --graph=foo.gph],
[foo.c++ foo.gph])
# Be sure to reject cases where the parser and the header would have
# the same name.
AT_SETUP([Clashing Output Files.])
AT_DATA([foo.y],
[[%% foo: {};
]])
AT_CHECK([bison -do foo.x foo.y], [1], [],
[foo.y:2: fatal error: header and parser would be both named `foo.x'
])
AT_CLEANUP