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3635306b39
When the `DWOPath` is absolute, we want to use `DWOPath` as is, without prepending any other
components to the path. The `sys::path::append` does not join, but rather unconditionally appends
the paths, so something like `sys::path::append("/tmp", "/tmp/banana")` will result in
`/tmp/tmp/banana` rather than the desired `/tmp/banana`.
This then causes `llvm-dwp` to fail in a following situation:
```
$ clang -gsplit-dwarf /tmp/banana/test.c -c -o /tmp/outdir/foo.o
$ clang outdir/foo.o -o outdir/hm
$ llvm-dwarfdump outdir/hm | grep -C2 foo.dwo
DW_AT_comp_dir ("/tmp")
DW_AT_GNU_pubnames (true)
DW_AT_GNU_dwo_name ("/tmp/outdir/foo.dwo")
DW_AT_GNU_dwo_id (0xde4d396f3bf0e257)
DW_AT_low_pc (0x0000000000401100)
$ strace -o trace llvm-dwp -e outdir/hm -o outdir/hm.dwp
error: No such file or directory
$ cat trace | grep foo.dwo
openat(AT_FDCWD, "/tmp/tmp/outdir/foo.dwo", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
```
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D96678
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| bugpoint | ||
| bugpoint-passes | ||
| dsymutil | ||
| gold | ||
| llc | ||
| lli | ||
| llvm-ar | ||
| llvm-as | ||
| llvm-as-fuzzer | ||
| llvm-bcanalyzer | ||
| llvm-c-test | ||
| llvm-cat | ||
| llvm-cfi-verify | ||
| llvm-config | ||
| llvm-cov | ||
| llvm-cvtres | ||
| llvm-cxxdump | ||
| llvm-cxxfilt | ||
| llvm-cxxmap | ||
| llvm-diff | ||
| llvm-dis | ||
| llvm-dwarfdump | ||
| llvm-dwp | ||
| llvm-elfabi | ||
| llvm-exegesis | ||
| llvm-extract | ||
| llvm-go | ||
| llvm-gsymutil | ||
| llvm-ifs | ||
| llvm-isel-fuzzer | ||
| llvm-itanium-demangle-fuzzer | ||
| llvm-jitlink | ||
| llvm-jitlistener | ||
| llvm-libtool-darwin | ||
| llvm-link | ||
| llvm-lipo | ||
| llvm-lto | ||
| llvm-lto2 | ||
| llvm-mc | ||
| llvm-mc-assemble-fuzzer | ||
| llvm-mc-disassemble-fuzzer | ||
| llvm-mca | ||
| llvm-microsoft-demangle-fuzzer | ||
| llvm-ml | ||
| llvm-modextract | ||
| llvm-mt | ||
| llvm-nm | ||
| llvm-objcopy | ||
| llvm-objdump | ||
| llvm-opt-fuzzer | ||
| llvm-opt-report | ||
| llvm-pdbutil | ||
| llvm-profdata | ||
| llvm-profgen | ||
| llvm-rc | ||
| llvm-readobj | ||
| llvm-reduce | ||
| llvm-rtdyld | ||
| llvm-shlib | ||
| llvm-size | ||
| llvm-special-case-list-fuzzer | ||
| llvm-split | ||
| llvm-stress | ||
| llvm-strings | ||
| llvm-symbolizer | ||
| llvm-undname | ||
| llvm-xray | ||
| llvm-yaml-numeric-parser-fuzzer | ||
| llvm-yaml-parser-fuzzer | ||
| lto | ||
| msbuild | ||
| obj2yaml | ||
| opt | ||
| opt-viewer | ||
| remarks-shlib | ||
| sancov | ||
| sanstats | ||
| split-file | ||
| verify-uselistorder | ||
| vfabi-demangle-fuzzer | ||
| xcode-toolchain | ||
| yaml2obj | ||
| CMakeLists.txt | ||