Hi Karl, hi all, we got a bug report concerning (g)info segfaulting in big terminals. I can reproduce it here with 95 and 96.
I build .96 and run it under the debugger, and got the following backtrace, the free segfault is in (maybe_)free (window->log_line_no); Program received signal SIGSEGV, Segmentation fault. *__GI___libc_free (mem=0x746963696c706d69) at malloc.c:3709 3709 malloc.c: No such file or directory. (gdb) bt #0 *__GI___libc_free (mem=0x746963696c706d69) at malloc.c:3709 #1 0x000000000041fac6 in recalculate_line_starts (window=window@entry=0x67c060) at window.c:866 #2 0x000000000041fafc in window_set_node_of_window (window=0x67c060, node=0x67e560) at window.c:621 #3 0x000000000041ff3f in window_make_window (node=0x67e560) at window.c:311 #4 0x0000000000406f59 in ea_possible_completions (window=<optimized out>, count=<optimized out>, key=<optimized out>) at echo-area.c:1042 #5 0x0000000000419c39 in info_dispatch_on_key (key=9 '\t', map=<optimized out>) at session.c:5130 #6 0x000000000041a87d in info_read_and_dispatch () at session.c:227 #7 0x00000000004071e0 in info_read_completing_internal (window=window@entry=0x66f300, prompt=<optimized out>, completions=completions@entry=0x69d640, force=force@entry=0) at echo-area.c:836 #8 0x0000000000407377 in info_read_maybe_completing (window=window@entry=0x66f300, prompt=<optimized out>, completions=completions@entry=0x69d640) at echo-area.c:911 #9 0x0000000000409ac6 in do_info_index_search (window=0x66f300, count=1, search_string=0x0) at indices.c:220 #10 0x0000000000419c39 in info_dispatch_on_key (key=105 'i', map=<optimized out>) at session.c:5130 #11 0x000000000041a87d in info_read_and_dispatch () at session.c:227 #12 0x000000000041a930 in info_session () at session.c:175 #13 0x000000000041a999 in display_startup_message_and_start () at session.c:166 #14 0x000000000041a9b7 in begin_info_session (initial_node=initial_node@entry=0x65fdd0) at session.c:153 #15 0x0000000000403e97 in main (argc=<optimized out>, argv=0x7fffffffe178) at info.c:522 It seems really depending on the big terminal size, as with a normal sized window I couldn't reproduce that. Note that we are building with the following options to gcc: -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -MT (don't ask me what they mean, they are generated by dpkg-whatever) All the best Norbert On Di, 12 Feb 2013, Peter De Wachter wrote: > This version of info sometimes crashes when using tab completion. It only > happens with some info files, and seemingly only on large terminals. This > doesn't occur with the version from unstable (4.13a.dfsg.1-10). > > To reproduce, take large terminal, for example: > > $ echo $LINES $COLUMNS > 64 208 > > Start info with the make info file from make-doc 3.81-5.1: > > $ info make > > Enter these keystrokes: > > i p TAB TAB > > Result: segfault. ------------------------------------------------------------------------ PREINING, Norbert http://www.preining.info JAIST, Japan TeX Live & Debian Developer DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 ------------------------------------------------------------------------ -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org