Nico Weber
|
2c45043415
|
lld/elf: Deduplicate undefined symbol diagnostics
Before:
```
ld.lld: error: undefined symbol: f()
>>> referenced by test.cc:3
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(g())
ld.lld: error: undefined symbol: f()
>>> referenced by test.cc:4
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(h())
ld.lld: error: undefined symbol: f()
>>> referenced by test.cc:5
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(j())
ld.lld: error: undefined symbol: k()
>>> referenced by test.cc:5
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(j())
ld.lld: error: undefined symbol: f()
>>> referenced by test2.cc:2
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test2-07b391.o:(asdf())
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```
Now:
```
ld.lld: error: undefined symbol: f()
>>> referenced by test.cc:3
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(g())
>>> referenced by test.cc:4
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(h())
>>> referenced by test.cc:5
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(j())
>>> referenced by test2.cc:2
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test2-6bdb24.o:(asdf())
ld.lld: error: undefined symbol: k()
>>> referenced by test.cc:5
>>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(j())
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```
If there are more than 10 references to an undefined symbol, only the
first 10 are printed.
Fixes PR42260.
Differential Revision: https://reviews.llvm.org/D63344
llvm-svn: 363962
|
2019-06-20 18:25:57 +00:00 |