https://bugs.llvm.org/show_bug.cgi?id=32584
Bug ID: 32584
Summary: llvm-cov isn't able to process files on Windows
because of too long section names
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
File llvm\include\llvm\ProfileData\InstrProfData.inc defines several section
names like:
INSTR_PROF_DATA_SECT_NAME __llvm_prf_data
INSTR_PROF_NAME_SECT_NAME __llvm_prf_names
...
llvm-cov looks for these section names within .exe file.
E.g in function loadBinaryFormat in module LLVMCoverage we are searching for
INSTR_PROF_NAME_SECT_NAME ( getInstrProfNameSectionName function ).
Unfortunately this name can't be found in the exe file, because this section
was truncated to 8 bytes.
objdump displays:
1000 __llvm_p
2000 __llvm_p
On Windows maximum section name length is 8 bytes. More details is here:
( https://msdn.microsoft.com/en-us/library/ms809762.aspx - Table 6.
IMAGE_SECTION_HEADER Formats ).
Finally it is not possible to display coverage .profdata file using clang-cov.
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