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Fix a potential infinite loop in the Windows resource parser. 

PR 26082
	* mclex.c (yylex): Add test for an empty input stream.
This commit is contained in:
Joel Anderson 2020-06-05 11:11:03 +01:00 committed by Nick Clifton
parent 9c65eeacd8
commit 8affa48ac7
2 changed files with 15 additions and 8 deletions
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5
binutils/ChangeLog
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@ -1,3 +1,8 @@
2020-06-05 Joel Anderson <joelanderson333@gmail.com>
PR 26082
* mclex.c (yylex): Add test for an empty input stream.
2020-06-04 Stephen Casner <casner@acm.org>
* testsuite/binutils-all/pr25662-pdp11.s: Alternate source file

18
binutils/mclex.c
View File

@ -337,17 +337,19 @@ yylex (void)
if (mclex_want_line)
{
start_token = input_stream_pos;
if (input_stream_pos[0] == 0)
return -1;
if (input_stream_pos[0] == '.'
&& (input_stream_pos[1] == '\n'
|| (input_stream_pos[1] == '\r' && input_stream_pos[2] == '\n')))
{
mclex_want_line = FALSE;
while (input_stream_pos[0] != 0 && input_stream_pos[0] != '\n')
++input_stream_pos;
if (input_stream_pos[0] == '\n')
++input_stream_pos;
return MCENDLINE;
}
{
mclex_want_line = FALSE;
while (input_stream_pos[0] != 0 && input_stream_pos[0] != '\n')
++input_stream_pos;
if (input_stream_pos[0] == '\n')
++input_stream_pos;
return MCENDLINE;
}
while (input_stream_pos[0] != 0 && input_stream_pos[0] != '\n')
++input_stream_pos;
if (input_stream_pos[0] == '\n')