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vim/src/message_test.c
Hirohito Higashi c5654b8448
patch 9.1.1097: --log with non-existent path causes a crash 
Problem:  --log with non-existent path causes a crash
          (Ekkosun)
Solution: split initialization phase and init the execution stack
          earlier (Hirohito Higashi)

fixes: #16606
closes: #16610

Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
2025-02-10 21:12:19 +01:00

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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* message_test.c: Unittests for message.c
*/
#undef NDEBUG
#include <assert.h>
// Must include main.c because it contains much more than just main()
#define NO_VIM_MAIN
#include "main.c"
// This file has to be included because some of the tested functions are
// static.
#include "message.c"
#ifndef MIN
# define MIN(x,y) ((x) < (y) ? (x) : (y))
#endif
// These formats are not standard in C printf() function.
// Use a global variable rather than a literal format to disable
// -Wformat compiler warnings:
//
// - warning: '0' flag used with ‘%p’ gnu_printf format
// - warning: format ‘%S’ expects argument of type ‘wchar_t *’, but argument 4 has type ‘char *’
// - warning: unknown conversion type character ‘b’ in format
//
// These formats are in practise only used from vim script printf()
// function and never as literals in C code.
char *fmt_012p = "%012p";
char *fmt_5S = "%5S";
char *fmt_06b = "%06b";
char *fmt_06pb = "%1$0.*2$b";
char *fmt_06pb2 = "%2$0*1$b";
char *fmt_212s = "%2$s %1$s %2$s";
char *fmt_21s = "%2$s %1$s";
/*
* Test trunc_string().
*/
static void
test_trunc_string(void)
{
char_u *buf; /*allocated every time to find uninit errors */
char_u *s;
// Should not write anything to destination if buflen is 0.
trunc_string((char_u *)"", NULL, 1, 0);
// Truncating an empty string does nothing.
buf = alloc(1);
trunc_string((char_u *)"", buf, 1, 1);
assert(buf[0] == NUL);
vim_free(buf);
// in place
buf = alloc(40);
STRCPY(buf, "text");
trunc_string(buf, buf, 20, 40);
assert(STRCMP(buf, "text") == 0);
vim_free(buf);
buf = alloc(40);
STRCPY(buf, "a short text");
trunc_string(buf, buf, 20, 40);
assert(STRCMP(buf, "a short text") == 0);
vim_free(buf);
buf = alloc(40);
STRCPY(buf, "a text tha just fits");
trunc_string(buf, buf, 20, 40);
assert(STRCMP(buf, "a text tha just fits") == 0);
vim_free(buf);
buf = alloc(40);
STRCPY(buf, "a text that nott fits");
trunc_string(buf, buf, 20, 40);
assert(STRCMP(buf, "a text t...nott fits") == 0);
vim_free(buf);
// copy from string to buf
buf = alloc(40);
s = vim_strsave((char_u *)"text");
trunc_string(s, buf, 20, 40);
assert(STRCMP(buf, "text") == 0);
vim_free(buf);
vim_free(s);
buf = alloc(40);
s = vim_strsave((char_u *)"a text that fits");
trunc_string(s, buf, 34, 40);
assert(STRCMP(buf, "a text that fits") == 0);
vim_free(buf);
vim_free(s);
buf = alloc(40);
s = vim_strsave((char_u *)"a short text");
trunc_string(s, buf, 20, 40);
assert(STRCMP(buf, "a short text") == 0);
vim_free(buf);
vim_free(s);
buf = alloc(40);
s = vim_strsave((char_u *)"a text tha just fits");
trunc_string(s, buf, 20, 40);
assert(STRCMP(buf, "a text tha just fits") == 0);
vim_free(buf);
vim_free(s);
buf = alloc(40);
s = vim_strsave((char_u *)"a text that nott fits");
trunc_string(s, buf, 20, 40);
assert(STRCMP(buf, "a text t...nott fits") == 0);
vim_free(buf);
vim_free(s);
}
/*
* Test trunc_string() with mbyte chars.
*/
static void
test_trunc_string_mbyte(void)
{
char_u *buf; // allocated every time to find uninit errors
char_u *s;
buf = alloc(40);
s = vim_strsave((char_u *)"Ä text tha just fits");
trunc_string(s, buf, 20, 40);
assert(STRCMP(buf, "Ä text tha just fits") == 0);
vim_free(buf);
vim_free(s);
buf = alloc(40);
s = vim_strsave((char_u *)"a text ÄÖÜä nott fits");
trunc_string(s, buf, 20, 40);
assert(STRCMP(buf, "a text Ä...nott fits") == 0);
vim_free(buf);
vim_free(s);
buf = alloc(40);
s = vim_strsave((char_u *)"a text that not fitsÄ");
trunc_string(s, buf, 20, 40);
assert(STRCMP(buf, "a text t...not fitsÄ") == 0);
vim_free(buf);
vim_free(s);
}
/*
* Test vim_snprintf() with a focus on checking that truncation is
* correct when buffer is small, since it cannot be tested from
* vim script tests. Check that:
* - no buffer overflows happens (with valgrind or asan)
* - output string is always NUL terminated.
*
* Not all formats of vim_snprintf() are checked here. They are
* checked more exhaustively in Test_printf*() vim script tests.
*/
static void
test_vim_snprintf(void)
{
int n;
size_t bsize;
int bsize_int;
void *ptr = (void *)0x87654321;
// Loop on various buffer sizes to make sure that truncation of
// vim_snprintf() is correct.
for (bsize = 0; bsize < 15; ++bsize)
{
bsize_int = (int)bsize - 1;
// buf is the heap rather than in the stack
// so valgrind can detect buffer overflows if any.
// Use malloc() rather than alloc() as test checks with 0-size
// buffer and its content should then never be used.
char *buf = malloc(bsize);
n = vim_snprintf(buf, bsize, "%.8g", 10000000.1);
assert(n == 12);
assert(bsize == 0 || STRNCMP(buf, "1.00000001e7", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%d", 1234567);
assert(n == 7);
assert(bsize == 0 || STRNCMP(buf, "1234567", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%ld", 1234567L);
assert(n == 7);
assert(bsize == 0 || STRNCMP(buf, "1234567", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%9ld", 1234567L);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, " 1234567", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%-9ld", 1234567L);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, "1234567 ", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%x", 0xdeadbeef);
assert(n == 8);
assert(bsize == 0 || STRNCMP(buf, "deadbeef", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_06b, (uvarnumber_T)12);
assert(n == 6);
assert(bsize == 0 || STRNCMP(buf, "001100", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%s %s", "one", "two");
assert(n == 7);
assert(bsize == 0 || STRNCMP(buf, "one two", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%f", 1.234);
assert(n == 8);
assert(bsize == 0 || STRNCMP(buf, "1.234000", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%e", 1.234);
assert(n == 12);
assert(bsize == 0 || STRNCMP(buf, "1.234000e+00", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%f", 0.0/0.0);
assert(n == 3);
assert(bsize == 0 || STRNCMP(buf, "nan", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%f", 1.0/0.0);
assert(n == 3);
assert(bsize == 0 || STRNCMP(buf, "inf", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%f", -1.0/0.0);
assert(n == 4);
assert(bsize == 0 || STRNCMP(buf, "-inf", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%f", -0.0);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, "-0.000000", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%s", "漢語");
assert(n == 6);
assert(bsize == 0 || STRNCMP(buf, "漢語", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%8s", "漢語");
assert(n == 8);
assert(bsize == 0 || STRNCMP(buf, " 漢語", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%-8s", "漢語");
assert(n == 8);
assert(bsize == 0 || STRNCMP(buf, "漢語 ", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%.3s", "漢語");
assert(n == 3);
assert(bsize == 0 || STRNCMP(buf, "漢", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_5S, "foo");
assert(n == 5);
assert(bsize == 0 || STRNCMP(buf, " foo", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%%%%%%");
assert(n == 3);
assert(bsize == 0 || STRNCMP(buf, "%%%", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%c%c", 1, 2);
assert(n == 2);
assert(bsize == 0 || STRNCMP(buf, "\x01\x02", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
// %p format is not tested in vim script tests Test_printf*()
// as it only makes sense in C code.
// NOTE: SunOS libc doesn't use the prefix "0x" on %p.
#ifdef SUN_SYSTEM
# define PREFIX_LEN 0
# define PREFIX_STR1 ""
# define PREFIX_STR2 "00"
#else
# define PREFIX_LEN 2
# define PREFIX_STR1 "0x"
# define PREFIX_STR2 "0x"
#endif
n = vim_snprintf(buf, bsize, "%p", ptr);
assert(n == 8 + PREFIX_LEN);
assert(bsize == 0
|| STRNCMP(buf, PREFIX_STR1 "87654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_012p, ptr);
assert(n == 12);
assert(bsize == 0
|| STRNCMP(buf, PREFIX_STR2 "0087654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
free(buf);
}
}
/*
* Test vim_snprintf() with a focus on checking that positional
* arguments are correctly applied and skipped
*/
static void
test_vim_snprintf_positional(void)
{
int n;
size_t bsize;
int bsize_int;
// Loop on various buffer sizes to make sure that truncation of
// vim_snprintf() is correct.
for (bsize = 0; bsize < 25; ++bsize)
{
bsize_int = (int)bsize - 1;
// buf is the heap rather than in the stack
// so valgrind can detect buffer overflows if any.
// Use malloc() rather than alloc() as test checks with 0-size
// buffer and its content should then never be used.
char *buf = malloc(bsize);
n = vim_snprintf(buf, bsize, "%1$*2$ld", 1234567L, -9);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, "1234567 ", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$*2$.*3$ld", 1234567L, -9, 5);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, "1234567 ", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$*3$.*2$ld", 1234567L, 5, -9);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, "1234567 ", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%3$*1$.*2$ld", -9, 5, 1234567L);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, "1234567 ", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$ld", 1234567L);
assert(n == 7);
assert(bsize == 0 || STRNCMP(buf, "1234567", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$*2$ld", 1234567L, 9);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, " 1234567", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$ld %1$d %3$lu", 12345, 9L, 7654321UL);
assert(n == 15);
assert(bsize == 0 || STRNCMP(buf, "9 12345 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$d %1$ld %3$lu", 1234567L, 9, 7654321UL);
assert(n == 17);
assert(bsize == 0 || STRNCMP(buf, "9 1234567 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$d %1$lld %3$lu", 1234567LL, 9, 7654321UL);
assert(n == 17);
assert(bsize == 0 || STRNCMP(buf, "9 1234567 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$ld %1$u %3$lu", 12345U, 9L, 7654321UL);
assert(n == 15);
assert(bsize == 0 || STRNCMP(buf, "9 12345 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$d %1$lu %3$lu", 1234567UL, 9, 7654321UL);
assert(n == 17);
assert(bsize == 0 || STRNCMP(buf, "9 1234567 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$d %1$llu %3$lu", 1234567LLU, 9, 7654321UL);
assert(n == 17);
assert(bsize == 0 || STRNCMP(buf, "9 1234567 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$d %1$x %3$lu", 0xdeadbeef, 9, 7654321UL);
assert(n == 18);
assert(bsize == 0 || STRNCMP(buf, "9 deadbeef 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$ld %1$c %3$lu", 'c', 9L, 7654321UL);
assert(n == 11);
assert(bsize == 0 || STRNCMP(buf, "9 c 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$ld %1$s %3$lu", "hi", 9L, 7654321UL);
assert(n == 12);
assert(bsize == 0 || STRNCMP(buf, "9 hi 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%2$ld %1$e %3$lu", 0.0, 9L, 7654321UL);
assert(n == 22);
assert(bsize == 0 || STRNCMP(buf, "9 0.000000e+00 7654321", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_212s, "one", "two", "three");
assert(n == 11);
assert(bsize == 0 || STRNCMP(buf, "two one two", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%3$s %1$s %2$s", "one", "two", "three");
assert(n == 13);
assert(bsize == 0 || STRNCMP(buf, "three one two", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$d", 1234567);
assert(n == 7);
assert(bsize == 0 || STRNCMP(buf, "1234567", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$x", 0xdeadbeef);
assert(n == 8);
assert(bsize == 0 || STRNCMP(buf, "deadbeef", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_06pb2, 6, (uvarnumber_T)12);
assert(n == 6);
assert(bsize == 0 || STRNCMP(buf, "001100", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_06pb, (uvarnumber_T)12, 6);
assert(n == 6);
assert(bsize == 0 || STRNCMP(buf, "001100", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$s %2$s", "one", "two");
assert(n == 7);
assert(bsize == 0 || STRNCMP(buf, "one two", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_06b, (uvarnumber_T)12);
assert(n == 6);
assert(bsize == 0 || STRNCMP(buf, "001100", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, fmt_21s, "one", "two", "three");
assert(n == 7);
assert(bsize == 0 || STRNCMP(buf, "two one", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
#ifdef FEAT_FLOAT
n = vim_snprintf(buf, bsize, "%1$f", 1.234);
assert(n == 8);
assert(bsize == 0 || STRNCMP(buf, "1.234000", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$e", 1.234);
assert(n == 12);
assert(bsize == 0 || STRNCMP(buf, "1.234000e+00", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$f", 0.0/0.0);
assert(n == 3);
assert(bsize == 0 || STRNCMP(buf, "nan", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$f", 1.0/0.0);
assert(n == 3);
assert(bsize == 0 || STRNCMP(buf, "inf", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$f", -1.0/0.0);
assert(n == 4);
assert(bsize == 0 || STRNCMP(buf, "-inf", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
n = vim_snprintf(buf, bsize, "%1$f", -0.0);
assert(n == 9);
assert(bsize == 0 || STRNCMP(buf, "-0.000000", bsize_int) == 0);
assert(bsize == 0 || buf[MIN(n, bsize_int)] == '\0');
#endif
free(buf);
}
}
int
main(int argc, char **argv)
{
CLEAR_FIELD(params);
params.argc = argc;
params.argv = argv;
common_init_1();
common_init_2(&params);
set_option_value_give_err((char_u *)"encoding", 0, (char_u *)"utf-8", 0);
init_chartab();
test_trunc_string();
test_trunc_string_mbyte();
test_vim_snprintf();
test_vim_snprintf_positional();
set_option_value_give_err((char_u *)"encoding", 0, (char_u *)"latin1", 0);
init_chartab();
test_trunc_string();
test_vim_snprintf();
test_vim_snprintf_positional();
return 0;
}
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