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49 lines
1.4 KiB
49 lines
1.4 KiB
4 months ago
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// RUN: dsymutil -f -y %p/dummy-debug-map.map -oso-prepend-path %p/../Inputs/dead-stripped -o - | llvm-dwarfdump - --debug-info | FileCheck %s
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// The test was compiled with:
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// clang++ -O2 -g -c dead-strip.cpp -o 1.o
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// The goal of the test is to exercise dsymutil's behavior in presence of
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// functions/variables that have been dead-stripped by the linker but
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// that are still present in the linked debug info (in this case because
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// they have been DW_TAG_import'd in another namespace).
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// Everything in the N namespace bellow doesn't have a debug map entry, and
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// thus is considered dead (::foo() has a debug map entry, otherwse dsymutil
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// would just drop the CU altogether).
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namespace N {
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int blah = 42;
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// This is actually a dsymutil-classic bug that we reproduced
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// CHECK: DW_TAG_variable
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// CHECK-NOT: DW_TAG
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// CHECK: DW_AT_location
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__attribute__((always_inline)) int foo() { return blah; }
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// CHECK: DW_TAG_subprogram
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// CHECK-NOT: DW_AT_low_pc
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// CHECK-NOT: DW_AT_high_pc
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// CHECK: DW_AT_frame_base
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// CHECK: DW_TAG_subprogram
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int bar(unsigned i) {
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int val = foo();
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if (i)
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return val + bar(i-1);
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return foo();
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}
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// CHECK: DW_TAG_subprogram
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// CHECK-NOT: DW_AT_low_pc
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// CHECK-NOT: DW_AT_high_pc
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// CHECK: DW_AT_frame_base
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// CHECK-NOT: DW_AT_location
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// CHECK-NOT: DW_AT_low_pc
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// CHECK-NOT: DW_AT_high_pc
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}
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// CHECK: TAG_imported_module
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using namespace N;
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void foo() {}
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