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28b2d0c96f
This patch prevents dsymutil from resolving a reference to a NULL DIE when a bogus reference happens to be coincidentally referencing a NULL DIE. Now this is detected as an invalid reference and a warning is printed. Fixes: https://bugs.llvm.org/show_bug.cgi?id=33873 Differential revision: https://reviews.llvm.org/D38078 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313872 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
#RUN: llvm-dsymutil -f -oso-prepend-path=%p/Inputs/ -y %s -no-output 2>&1 \
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#RUN: | FileCheck %s
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# CHECK: warning: could not find referenced DIE
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# We've modified the DW_AT_abstract_origin offset to reference a NULL DIE.
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#
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# Source:
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#
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# void f1() {}
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# __attribute__((always_inline)) void f2() {
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# f1();
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# }
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# int main() {
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# f2();
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# }
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#
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# Compile with:
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#
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# $ clang -g null_die.c -O0 -S -o null_die.s
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#
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# Manually patch the DW_AT_abstract_origin to point to a NULL DIE.
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#
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# $ llvm-mc -triple x86_64-apple-darwin -filetype=obj -o null_die.o null_die.s
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#
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# To generate the debug map:
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#
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# $ ld -arch x86_64 -macosx_version_min 10.13.0 -lSystem null_die.o -o null_die
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# $ llvm-dsymutil -dump-debug-map null_die
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---
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triple: 'x86_64-apple-darwin'
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binary-path: null_die
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objects:
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- filename: /null_die.o
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timestamp: 1505928022
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symbols:
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- { sym: _main, objAddr: 0x0000000000000020, binAddr: 0x0000000100000F10, size: 0x0000000D }
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- { sym: _f1, objAddr: 0x0000000000000000, binAddr: 0x0000000100000EF0, size: 0x00000010 }
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- { sym: _f2, objAddr: 0x0000000000000010, binAddr: 0x0000000100000F00, size: 0x00000010 }
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...
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