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configure: Update configure so that open_by_handle_at check returns correct value
According to David Gibson for some compiler/libc combinations, open_by_handle_at test in configure isn't quite right: because the file_handle pointer is never dereferenced, gcc doesn't complain even if it is undefined. Change the test as suggested by him. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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@ -2562,7 +2562,7 @@ fi
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open_by_hande_at=no
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cat > $TMPC << EOF
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#include <fcntl.h>
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int main(void) { struct file_handle *fh; open_by_handle_at(0, fh, 0); }
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int main(void) { struct file_handle fh; open_by_handle_at(0, &fh, 0); }
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EOF
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if compile_prog "" "" ; then
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open_by_handle_at=yes
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