alvinhochun added a comment.
The test
https://github.com/llvm/llvm-project/blob/main/lldb/test/Shell/Minidump/Windows/find-module.test
fails with this patch. That test opens a minidump and checks that the
associated exe is loaded. The minidump contains a codeview PDB record for the
exe which is used to generate the UUID, but the same codeview PDB record is
missing from the exe. The test still worked because LLDB ignores the empty UUID
(it skips the UUID equality check). However, when this patch adds a UUID using
the CRC, that test fails because the UUIDs no longer match up.
I see two ways of fixing it:
1. Add the codeview PDB record to the test exe. I already prepared the change,
but I don't know if it is the expected behaviour (that the exe should have a
matching codeview PDB record).
diff
diff --git a/lldb/test/Shell/Minidump/Windows/Inputs/find-module.exe.yaml
b/lldb/test/Shell/Minidump/Windows/Inputs/find-module.exe.yaml
index 42ccc6d6e053..c4e2b931c4a3 100644
--- a/lldb/test/Shell/Minidump/Windows/Inputs/find-module.exe.yaml
+++ b/lldb/test/Shell/Minidump/Windows/Inputs/find-module.exe.yaml
@@ -16,6 +16,9 @@ OptionalHeader:
SizeOfStackCommit: 4096
SizeOfHeapReserve: 1048576
SizeOfHeapCommit: 4096
+ Debug:
+ RelativeVirtualAddress: 20480
+ Size: 28
header:
Machine: IMAGE_FILE_MACHINE_I386
Characteristics: [ IMAGE_FILE_EXECUTABLE_IMAGE, IMAGE_FILE_32BIT_MACHINE ]
@@ -28,5 +31,10 @@ sections:
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA,
IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
VirtualAddress: 16384
VirtualSize: 48
+ - Name: .buildid
+ Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
+ VirtualAddress: 20480
+ VirtualSize: 194
+ SectionData:
00000000E5038E620000000002000000A60000001C5000001C400000525344533ED87D89C8A8184197F3A925EE4BF74101000000433A5C70726F6A656374735C746573745F6170705C436F6E736F6C654170706C69636174696F6E315C44656275675C436F6E736F6C654170706C69636174696F6E312E70646200
symbols: []
...
2. Don't set the UUID with the CRC. In SymbolVendorCOFF, don't rely on the UUID
but instead implement a separate CRC check for debuglink (only necessary if
there is no codeview PDB record). This may be problematic though --
`Symbols::LocateExecutableSymbolFile` has more than one search path and it can
ignore files which doesn't match, but if I put the check in SymbolVendorCOFF it
can only get the first matching filename, which may not actually be the correct
match.
@labath I see you added the test in https://reviews.llvm.org/D65955, do you
have any comment on this?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D126367/new/
https://reviews.llvm.org/D126367
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