info not showing anything with certain build flags

[Norbert Preining]

Hi Karl, hi everyone,

on Debian we recently enabled hardening build flags, but that led to
a strange effect, namely that info didn't display *anything* at all.
You could start info, but there was an empty main window (text console),
but the status line showed the 
        ----INfo: (dir)Top, 1 lines --All----------------------
and the lasst line showed
        Welcome to Info version 4.13. Type h for help, m for menu item.
Typing m<TAB> also showed many entries, and I could browse some
info files. So for example
        m basename
showed the coreutils.info file 18.1 'basename' ... and that was visible.
But doing 
        u u u u
to go to the Top dir file again showed nothing.

After removing the hardening flags it worked again, so I assume that is 
is related to that. The way we are compiling is wiht
        CFLAGS="-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat 
-Wformat-security -Werror=format-security -Wall" 
        CPPFLAGS="-D_FORTIFY_SOURCE=2" 
        CXXFLAGS="-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat 
-Wformat-security -Werror=format-security" 
        FFLAGS="-g -O2" 
        LDFLAGS="-Wl,-z,relro"

Does anyone have an idea why this might happen?

(I tried compiling current sources, but that didn't work out, configure
errors etc)

Best wishes

Norbert
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Norbert Preining            address@hidden, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
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