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Improve a test
We want to make sure that absolute symbols in DSOs are dynamically resolved.
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parent
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commit
60ce1aaf01
@ -1,27 +1,31 @@
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#!/bin/bash
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. $(dirname $0)/common.inc
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cat <<EOF | $CC -fPIC -c -o $t/a.o -xassembler -
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cat <<EOF | $CC -B. -fPIC -shared -o $t/a.so -xassembler -
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.globl foo
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foo = 3;
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EOF
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$CC -B. -shared -o $t/b.so $t/a.o
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cat <<EOF | $CC -B. -fPIC -shared -o $t/b.so -xassembler -
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.globl foo
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foo = 5;
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EOF
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cat <<EOF > $t/c.c
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cat <<EOF | $CC -fPIC -c -o $t/c.o -xc -
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#include <stdio.h>
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extern char foo;
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int main() { printf("foo=%p\n", &foo); }
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EOF
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$CC -fPIC -c -o $t/d.o $t/c.c
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# This test fails with older glibc
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$CC -o $t/exe1 -pie $t/d.o $t/b.so 2> /dev/null || skip
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$CC -B. -o $t/exe1 -pie $t/c.o $t/a.so 2> /dev/null || skip
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$QEMU $t/exe1 | grep -q 'foo=0x3' || skip
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LD_PRELOAD=$t/b.so $QEMU $t/exe1 | grep -q 'foo=0x5'
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$CC -B. -o $t/exe2 -pie $t/d.o $t/b.so
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$CC -B. -o $t/exe2 -pie $t/c.o $t/a.so
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$QEMU $t/exe2 | grep -q 'foo=0x3'
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LD_PRELOAD=$t/b.so $QEMU $t/exe2 | grep -q 'foo=0x5'
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$CC -B. -o $t/exe3 -no-pie $t/d.o $t/b.so
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$CC -B. -o $t/exe3 -no-pie $t/c.o $t/a.so
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$QEMU $t/exe3 | grep -q 'foo=0x3'
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LD_PRELOAD=$t/b.so $QEMU $t/exe3 | grep -q 'foo=0x5'
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