Fix problems detected by fortified builds

eudev-project / eudev

Repository for eudev development

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Fix problems detected by fortified builds #232

Closed bbonev closed 2 years ago

bbonev commented 2 years ago

do not overwrite memory (-pre versions trigger this)
do not use truncated strings
kill the warnings for unused result

tested on gcc 11.3 with:

CPPFLAGS="-Wdate-time -D_FORTIFY_SOURCE=2" \
CFLAGS="-g -O2 -fstack-protector-strong -Wformat -Werror=format-security" \
LDFLAGS="-Wl,-z,relro -Wl,-z,now" \
./configure && \
make -j