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| author | Joel Anderson <joelanderson333@gmail.com> | 2020-06-05 11:11:03 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2020-06-05 11:11:03 +0100 |
| commit | 8affa48ac7c55ade04713654a22f1c56319b1195 (patch) | |
| tree | c79dda5ea17959e62300dc6b9c382cb978df2a18 /binutils/mclex.c | |
| parent | 9c65eeacd88bc02aad537394930b48c50fb616d6 (diff) | |
| download | gdb-8affa48ac7c55ade04713654a22f1c56319b1195.zip gdb-8affa48ac7c55ade04713654a22f1c56319b1195.tar.gz gdb-8affa48ac7c55ade04713654a22f1c56319b1195.tar.bz2 | |
Fix a potential infinite loop in the Windows resource parser.
PR 26082
* mclex.c (yylex): Add test for an empty input stream.
Diffstat (limited to 'binutils/mclex.c')
| -rw-r--r-- | binutils/mclex.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/binutils/mclex.c b/binutils/mclex.c index 7e0688b..1b5d5c3 100644 --- a/binutils/mclex.c +++ b/binutils/mclex.c @@ -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') |