f44bee78c4
The ManualDWARFIndex class can create a index cache if the LLDB index cache is enabled. This used to save the index to the same file, regardless of wether the cache was a full index (no .debug_names) or a partial index (have .debug_names, but not all .o files were had .debug_names). So we could end up saving an index cache that was partial, and then later load that partial index as if it were a full index if the user set the 'settings set plugin.symbol-file.dwarf.ignore-file-indexes true'. This would cause us to ignore the .debug_names section, and if the index cache was enabled, we could end up loading the partial index as if it were a full DWARF index. This patch detects when the ManualDWARFIndex is being used with .debug_names, and saves out a cache file with a suffix of "-full" or "-partial" to avoid this issue.
63 lines
3.1 KiB
C++
63 lines
3.1 KiB
C++
// REQUIRES: lld
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// Test if we build a mixed binary where one .o file has a .debug_names and
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// another doesn't have one, that we save a full or partial index cache.
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// Previous versions of LLDB would have ManualDWARFIndex.cpp that would save out
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// an index cache to the same file regardless of wether the index cache was a
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// full DWARF manual index, or just the CUs and TUs that were missing from any
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// .debug_names tables. If the user had a .debug_names table and debugged once
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// with index caching enabled, then debugged again but set the setting to ignore
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// .debug_names ('settings set plugin.symbol-file.dwarf.ignore-file-indexes 1')
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// this could cause LLDB to load the index cache from the previous run which
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// was incomplete and it only contained the manually indexed DWARF from the run
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// where we used .debug_names, but it would now load it as if it were the
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// complete DWARF index.
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// Test that if we don't have .debug_names, that we save a full DWARF index.
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// RUN: %clang -target x86_64-pc-linux -gsplit-dwarf -gdwarf-5 -DMAIN=1 -c %s -o %t.main.o
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// RUN: %clang -target x86_64-pc-linux -gsplit-dwarf -gdwarf-5 -DMAIN=0 -c %s -o %t.foo.o
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// RUN: ld.lld %t.main.o %t.foo.o -o %t.nonames
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// RUN: llvm-dwp %t.main.dwo %t.foo.dwo -o %t.nonames.dwp
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// RUN: rm %t.main.dwo %t.foo.dwo
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// Run one time with the index cache enabled to populate the index cache. When
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// we populate the index cache we have to parse all of the DWARF debug info
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// and it is always available.
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// RUN: rm -rf %t.lldb-index-cache
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// RUN: %lldb \
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// RUN: -O 'settings set symbols.enable-lldb-index-cache true' \
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// RUN: -O 'settings set symbols.lldb-index-cache-path %t.lldb-index-cache' \
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// RUN: -O 'settings set target.preload-symbols true' \
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// RUN: %t.nonames -b
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// Make sure there is a file with "dwarf-index-full" in its filename
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// RUN: ls %t.lldb-index-cache | FileCheck %s -check-prefix=FULL
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// FULL: {{dwp-index-cache.cpp.tmp.nonames.*-dwarf-index-full-}}
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// Test that if we have one .o file with .debug_names and one without, that we
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// save a partial DWARF index.
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// RUN: %clang -target x86_64-pc-linux -gsplit-dwarf -gdwarf-5 -DMAIN=1 -c %s -o %t.main.o -gpubnames
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// RUN: %clang -target x86_64-pc-linux -gsplit-dwarf -gdwarf-5 -DMAIN=0 -c %s -o %t.foo.o
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// RUN: ld.lld %t.main.o %t.foo.o -o %t.somenames
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// RUN: llvm-dwp %t.main.dwo %t.foo.dwo -o %t.somenames.dwp
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// RUN: rm %t.main.dwo %t.foo.dwo
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// Run one time with the index cache enabled to populate the index cache. When
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// we populate the index cache we have to parse all of the DWARF debug info
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// and it is always available.
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// RUN: rm -rf %t.lldb-index-cache
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// RUN: %lldb \
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// RUN: -O 'settings set symbols.enable-lldb-index-cache true' \
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// RUN: -O 'settings set symbols.lldb-index-cache-path %t.lldb-index-cache' \
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// RUN: -O 'settings set target.preload-symbols true' \
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// RUN: %t.somenames -b
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// Make sure there is a file with "dwarf-index-full" in its filename
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// RUN: ls %t.lldb-index-cache | FileCheck %s -check-prefix=PARTIAL
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// PARTIAL: {{dwp-index-cache.cpp.tmp.somenames.*-dwarf-index-partial-}}
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#if MAIN
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extern int foo();
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int main() { return foo(); }
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#else
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int foo() { return 0; }
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#endif
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