llvm/test/DebugInfo/dwarfdump-decompression-error.test
George Rimar a83f092580 [llvm-dwarfdump] - Print an error message if section decompression failed.
llvm-dwarfdump currently prints no message if decompression fails 
for some reason. I noticed that during work on one of LLD patches 
where LLD produced an broken output. It was a bit confusing to see
no output for section dumped and no any error message at all.

Patch adds error message for such cases.

Differential revision: https://reviews.llvm.org/D32865

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302221 91177308-0d34-0410-b5e6-96231b3b80d8
2017-05-05 10:52:39 +00:00

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REQUIRES: zlib
// dwarfdump-decompression-error.elf-x86-64 is prepared using following
// source code and invocation:
// test.cpp:
// int main() { return 0; }
//
// gcc test.cpp -o out -g -Wl,--compress-debug-sections,zlib
//
// After that result object was modified manually. One random byte in compressed
// content of .debug_info section was changed to 0xff. That breaks normal
// decompression flow in runtime.
RUN: llvm-dwarfdump %p/Inputs/dwarfdump-decompression-error.elf-x86-64 2>&1 | FileCheck %s
CHECK: error: failed to decompress '.debug_info', zlib error: Z_DATA_ERROR