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Remove any .comment sections if the first cmp failed

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PR bootstrap/53472
	* contrib/compare-debug (remove_comment): New function.
	Remove any .comment sections if the first cmp failed.

From-SVN: r187879
This commit is contained in:
H.J. Lu 2012-05-25 11:47:05 +00:00 committed by H.J. Lu
parent 619a69500d
commit c7046906c3
2 changed files with 30 additions and 0 deletions
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6
contrib/ChangeLog
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@ -1,3 +1,9 @@
2012-05-25 H.J. Lu <hongjiu.lu@intel.com>
PR bootstrap/53472
* contrib/compare-debug (remove_comment): New function.
Remove any .comment sections if the first cmp failed.
2012-05-09 David Edelsohn <dje.gcc@gmail.com>
* gcc_update: Use $GCC_SVN to retrieve branch and revision.

24
contrib/compare-debug
View File

@ -73,11 +73,35 @@ Darwin)
;;
esac
remove_comment ()
{
file=$1
opts=
for s in `objdump --section-headers "$file" | awk '{ print $2 }'`; do
case "$s" in
.comment*)
opts="$opts --remove-section $s"
;;
esac
done
[ -n "$opts" ] && objcopy $opts $file
}
if cmp "$1.$suf1" "$2.$suf2"; then
status=0
else
status=1
# Remove any .comment sections.
if (objcopy -v) 2>&1 | grep ' --remove-section' > /dev/null \
&& (objdump --help) 2>&1 | grep ' --\[*section-\]*headers' > /dev/null; then
remove_comment "$1.$suf1"
remove_comment "$2.$suf2"
if cmp "$1.$suf1" "$2.$suf2"; then
status=0
fi
fi
# Assembler-generated CFI will add an .eh_frame section for -g not
# present in -g0. Try to cope with it by checking that an .eh_frame
# section is present in either object file, and then stripping it