https://bugs.llvm.org/show_bug.cgi?id=42386
Bug ID: 42386
Summary: Clang returns zero but does not create output file
with -c + object file as input
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Driver
Assignee: unassignedclangb...@nondot.org
Reporter: s...@chromium.org
CC: llvm-bugs@lists.llvm.org, neeil...@live.com,
richard-l...@metafoo.co.uk
I would expect clang to return non-zero when the output is not generated.
```
$ clanh -c -o hello2.o hello.o
clang-9: warning: hello.o: 'linker' input unused
[-Wunused-command-line-argument]
$ echo $?
0
$ stat hello2.o
stat: cannot stat 'hello2.o': No such file or directory
```
I noticed gcc has the same behavior, but still I would expect `clang: error: no
input files` after the warning and a non-zero return code.
Another way of putting it: if all inputs are unused I would expect "no input
files" error.
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