Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-10 04:43:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

Bison dumps core when trying to complain about broken input files.

Browse Source 
Reported by Cris van Pelt.
* src/lex.c (parse_percent_token): Be sure to set token_buffer.
* tests/regression.at (Invalid input: 1, Invalid input: 2): Merge
into...
(Invalid inputs): Strengthen: exercise parse_percent_token.
This commit is contained in:
Akim Demaille
2002-01-24 17:09:34 +00:00
parent 2b548aa648
commit 29ae55f112
4 changed files with 42 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/lex.c
View File

@@ -482,43 +482,54 @@ parse_percent_token (void)
size_t arg_offset = 0;
int c = getc (finput);
obstack_1grow (&token_obstack, '%');
obstack_1grow (&token_obstack, c);
switch (c)
{
case '%':
token_buffer = obstack_finish (&token_obstack);
return tok_two_percents;
case '{':
token_buffer = obstack_finish (&token_obstack);
return tok_percent_left_curly;
/* FIXME: Who the heck are those 5 guys!?! `%<' = `%left'!!!
Let's ask for there removal. */
/* The following guys are here for backward compatibility with
very ancient Yacc versions. The paper of Johnson mentions
them (as ancient :). */
case '<':
token_buffer = obstack_finish (&token_obstack);
return tok_left;
case '>':
token_buffer = obstack_finish (&token_obstack);
return tok_right;
case '2':
token_buffer = obstack_finish (&token_obstack);
return tok_nonassoc;
case '0':
token_buffer = obstack_finish (&token_obstack);
return tok_token;
case '=':
token_buffer = obstack_finish (&token_obstack);
return tok_prec;
}
if (!isalpha (c))
return tok_illegal;
{
token_buffer = obstack_finish (&token_obstack);
return tok_illegal;
}
obstack_1grow (&token_obstack, '%');
while (isalpha (c) || c == '_' || c == '-')
while (c = getc (finput), isalpha (c) || c == '_' || c == '-')
{
if (c == '_')
c = '-';
obstack_1grow (&token_obstack, c);
c = getc (finput);
}
/* %DIRECTIVE="ARG". Separate into