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2c93286ab2
I noticed this when "git am CORRUPTED" unexpectedly failed with an
odd diagnostic, and even removed one of the files it was supposed
to have patched.
Reproduce with any valid old/new patch from which you have removed
the "+++ b/FILE" line. You'll see a diagnostic like this
fatal: unable to write file '(null)' mode 100644: Bad address
and you'll find that FILE has been removed.
The above is on glibc-based systems. On other systems, rather than
getting "null", you may provoke a segfault as git tries to
dereference the NULL file name.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
43 lines
876 B
Bash
Executable file
43 lines
876 B
Bash
Executable file
#!/bin/sh
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test_description='git am with corrupt input'
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. ./test-lib.sh
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# Note the missing "+++" line:
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cat > bad-patch.diff <<'EOF'
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From: A U Thor <au.thor@example.com>
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diff --git a/f b/f
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index 7898192..6178079 100644
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--- a/f
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@@ -1 +1 @@
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-a
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+b
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EOF
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test_expect_success setup '
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test $? = 0 &&
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echo a > f &&
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git add f &&
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test_tick &&
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git commit -m initial
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'
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# This used to fail before, too, but with a different diagnostic.
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# fatal: unable to write file '(null)' mode 100644: Bad address
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# Also, it had the unwanted side-effect of deleting f.
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test_expect_success 'try to apply corrupted patch' '
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git am bad-patch.diff 2> actual
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test $? = 1
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'
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cat > expected <<EOF
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fatal: git diff header lacks filename information (line 4)
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EOF
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test_expect_success 'compare diagnostic; ensure file is still here' '
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test $? = 0 &&
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test -f f &&
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test_cmp expected actual
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'
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test_done
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