column: disallow negative padding

A negative padding does not make sense and can cause errors in the memory allocator since it’s interpreted as an unsigned integer. Reported-by: Tiago Pascoal <tiago@pascoal.net> Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Kristoffer Haugsbakk committed Feb 13, 2024 at 17:01 UTC f2d31c69ce38e4515d5dfac34c69423c833b85f9
2 files changed +13
builtin/column.c
+2
@@ -45,6 +45,8 @@ int cmd_column(int argc, const char **argv, const char *prefix)
45 memset(&copts, 0, sizeof(copts));
46 copts.padding = 1;
47 argc = parse_options(argc, argv, prefix, options, builtin_column_usage, 0);
48 + if (copts.padding < 0)
49 + die(_("%s must be non-negative"), "--padding");
50 if (argc)
51 usage_with_options(builtin_column_usage, options);
52 if (real_command || command) {
t/t9002-column.sh
+11
@@ -196,4 +196,15 @@ EOF
196 test_cmp expected actual
197 '
198
199 +test_expect_success 'padding must be non-negative' '
200 + cat >input <<\EOF &&
201 +1 2 3 4 5 6
202 +EOF
203 + cat >expected <<\EOF &&
204 +fatal: --padding must be non-negative
205 +EOF
206 + test_must_fail git column --mode=column --padding=-1 <input >actual 2>&1 &&
207 + test_cmp expected actual
208 +'
209 +
210 test_done