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34558f410d
Previously, we created dynamic relocations against read-only sections if the sections contain relocations against weak undefined symbols. Since such dynamic relocations cannot be applied at load-time, the generated executables failed with SEGV. Now, such relocations are resolved to address 0. Reported at https://github.com/rui314/mold/pull/110
37 lines
664 B
Bash
Executable File
37 lines
664 B
Bash
Executable File
#!/bin/bash
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set -e
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cd $(dirname $0)
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mold=`pwd`/../mold
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echo -n "Testing $(basename -s .sh $0) ... "
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t=$(pwd)/tmp/$(basename -s .sh $0)
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mkdir -p $t
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cat <<EOF > $t/a.c
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#include <stdio.h>
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__attribute__((weak)) extern int foo;
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static int * const bar[] = {&foo};
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int main() {
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printf("%d\n", bar[0] ? *bar[0] : 3);
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}
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EOF
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cc -c -o $t/b.o $t/a.c -fno-PIC
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cc -c -o $t/c.o $t/a.c -fPIC
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clang -fuse-ld=$mold -no-pie -o $t/exe1 $t/b.o
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clang -fuse-ld=$mold -no-pie -o $t/exe2 $t/c.o
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$t/exe1 | grep -q 3
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$t/exe2 | grep -q 3
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cat <<EOF | cc -shared -o $t/d.so -xc -
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int foo = 7;
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EOF
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LD_PRELOAD=$t/d.so $t/exe1 | grep -q 3
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LD_PRELOAD=$t/d.so $t/exe2 | grep -q 7
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echo OK
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