From 8f4aa7ddb908369db971d4c31850ca1eef2e3687 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 1 Nov 2020 14:15:42 -0700 Subject: setexpr: Correct buffer overflow bug and enable tests At present when more than one substitution is made this function overwrites its buffers. Fix this bug and update the tests now that they can pass. Also update the debug code to show all substrings, since at present it omits the final one. Fixes: 855f18ea0e6 ("setexpr: add regex substring matching and substitution") Signed-off-by: Simon Glass --- test/cmd/setexpr.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) (limited to 'test') diff --git a/test/cmd/setexpr.c b/test/cmd/setexpr.c index d06dda260e6..2a897efd9bd 100644 --- a/test/cmd/setexpr.c +++ b/test/cmd/setexpr.c @@ -166,12 +166,10 @@ static int setexpr_test_regex(struct unit_test_state *uts) /* Global substitution */ ut_assertok(run_command("setenv fred 'this is a test'", 0)); - if (0) { - /* Causes a crash at present due to a bug in setexpr */ - ut_assertok(run_command("setexpr fred gsub is us", 0)); - val = env_get("fred"); - ut_asserteq_str("thus us a test", val); - } + ut_assertok(run_command("setexpr fred gsub is us", 0)); + val = env_get("fred"); + ut_asserteq_str("thus us a test", val); + /* Global substitution */ ut_assertok(run_command("setenv fred 'this is a test'", 0)); ut_assertok(run_command("setenv mary 'this is a test'", 0)); @@ -195,14 +193,9 @@ static int setexpr_test_regex_inc(struct unit_test_state *uts) buf = map_sysmem(0, BUF_SIZE); ut_assertok(run_command("setenv fred 'this is a test'", 0)); - if (0) { - /* Causes a crash at present due to a bug in setexpr */ - ut_assertok(run_command("setexpr fred gsub is much_longer_string", - 0)); - val = env_get("fred"); - ut_asserteq_str("thmuch_longer_string much_longer_string a test", - val); - } + ut_assertok(run_command("setexpr fred gsub is much_longer_string", 0)); + val = env_get("fred"); + ut_asserteq_str("thmuch_longer_string much_longer_string a test", val); unmap_sysmem(buf); return 0; @@ -234,9 +227,6 @@ static int setexpr_test_sub(struct unit_test_state *uts) ut_assertok(setexpr_regex_sub(buf, BUF_SIZE, nbuf, BUF_SIZE, "is", "us it is longer", true)); ut_asserteq_str("thus it is longer us it is longer a test", buf); - - /* The following checks fail at present due to a bug in setexpr */ - return 0; for (i = BUF_SIZE; i < 0x1000; i++) { ut_assertf(buf[i] == (char)i, "buf byte at %x should be %02x, got %02x)\n", -- cgit v1.2.3