* [PATCH] Don't allow implicit file argument in combination with -o
@ 2021-03-22 5:43 Tom de Vries
0 siblings, 0 replies; only message in thread
From: Tom de Vries @ 2021-03-22 5:43 UTC (permalink / raw)
To: dwz, jakub, mark
Hi,
Consider this dwz usage:
...
$ gcc ~/hello.c -g
$ dwz -o b.out
$
...
According to the advertised usage:
...
$ dwz -?
Usage:
dwz [common options] [-h] [-m COMMONFILE] [-M NAME | -r] [FILES]
dwz [common options] -o OUTFILE FILE
dwz [ -v | -? ]
...
the FILE argument is required when using -o OUTFILE.
Fix this by erroring out instead:
...
$ dwz -o b.out
dwz: Cannot use implicit file in combination with -o option
...
[ Alternatively, we could update the advertised usage. ]
Any comments?
Thanks,
- Tom
Don't allow implicit file argument in combination with -o
2021-03-22 Tom de Vries <tdevries@suse.de>
PR dwz/27595
* dwz.c (main): Don't allow implicit file argument in combination
with -o.
* testsuite/dwz.tests/pr27595.sh: New test.
---
dwz.c | 3 +++
testsuite/dwz.tests/pr27595.sh | 11 +++++++++++
2 files changed, 14 insertions(+)
diff --git a/dwz.c b/dwz.c
index a7aa23b..fe191ba 100644
--- a/dwz.c
+++ b/dwz.c
@@ -16428,6 +16428,9 @@ main (int argc, char *argv[])
{
const char *file = nr_files == 0 ? "a.out" : files[0];
+ if (nr_files == 0 && outfile != NULL)
+ error (1, 0, "Cannot use implicit file in combination with -o option");
+
if (multifile != NULL)
{
error (0, 0, "Too few files for multifile optimization");
diff --git a/testsuite/dwz.tests/pr27595.sh b/testsuite/dwz.tests/pr27595.sh
new file mode 100644
index 0000000..bd459be
--- /dev/null
+++ b/testsuite/dwz.tests/pr27595.sh
@@ -0,0 +1,11 @@
+cp $execs/hello a.out
+
+if dwz -o b.out 2> dwz.err; status=$?; then
+ true
+fi
+
+[ $status -eq 1 ]
+
+grep -q "Cannot use implicit file in combination with -o option" dwz.err
+
+rm -f a.out dwz.err
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