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#include <float.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <wchar.h>
#include <libc-diag.h>
static int
t1 (void)
{
int n = -1;
sscanf ("abc ", "abc %n", &n);
printf ("t1: count=%d\n", n);
return n != 5;
}
static int
t2 (void)
{
int result = 0;
int n;
long N;
int retval;
#define SCAN(INPUT, FORMAT, VAR, EXP_RES, EXP_VAL) \
VAR = -1; \
retval = sscanf (INPUT, FORMAT, &VAR); \
printf ("sscanf (\"%s\", \"%s\", &x) => %d, x = %ld\n", \
INPUT, FORMAT, retval, (long int) VAR); \
result |= retval != EXP_RES || VAR != EXP_VAL
/* This function is testing corner cases of the scanf format string,
so they do not all conform to -Wformat's expectations. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat");
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat-extra-args");
SCAN ("12345", "%ld", N, 1, 12345);
SCAN ("12345", "%llllld", N, 0, -1);
SCAN ("12345", "%LLLLLd", N, 0, -1);
SCAN ("test ", "%*s%n", n, 0, 4);
SCAN ("test ", "%2*s%n", n, 0, -1);
SCAN ("12 ", "%l2d", n, 0, -1);
SCAN ("12 ", "%2ld", N, 1, 12);
n = -1;
N = -1;
retval = sscanf ("1 1", "%d %Z", &n, &N);
printf ("sscanf (\"1 1\", \"%%d %%Z\", &n, &N) => %d, n = %d, N = %ld\n", \
retval, n, N); \
result |= retval != 1 || n != 1 || N != -1;
DIAG_POP_NEEDS_COMMENT;
return result;
}
static int
t3 (void)
{
char buf[80];
wchar_t wbuf[80];
int result = 0;
int retval;
retval = sprintf (buf, "%p", (char *) NULL);
result |= retval != 5 || strcmp (buf, "(nil)") != 0;
retval = swprintf (wbuf, sizeof (wbuf) / sizeof (wbuf[0]),
L"%p", (char *) NULL);
result |= retval != 5 || wcscmp (wbuf, L"(nil)") != 0;
return result;
}
volatile double qnanval;
volatile long double lqnanval;
/* A sNaN is only guaranteed to be representable in variables with static (or
thread-local) storage duration. */
static volatile double snanval = __builtin_nans ("");
static volatile double msnanval = -__builtin_nans ("");
static volatile long double lsnanval = __builtin_nansl ("");
static volatile long double lmsnanval = -__builtin_nansl ("");
volatile double infval;
volatile long double linfval;
static int
F (void)
{
char buf[80];
wchar_t wbuf[40];
int result = 0;
qnanval = NAN;
/* The %f and %F arguments are in fact constants, but GCC is
prevented from seeing this (volatile is used) so it cannot tell
that the output is not truncated. */
DIAG_PUSH_NEEDS_COMMENT;
#if __GNUC_PREREQ (7, 0)
DIAG_IGNORE_NEEDS_COMMENT (7.0, "-Wformat-truncation");
#endif
snprintf (buf, sizeof buf, "%a %A %e %E %f %F %g %G",
qnanval, qnanval, qnanval, qnanval,
qnanval, qnanval, qnanval, qnanval);
result |= strcmp (buf, "nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected \"nan NAN nan NAN nan NAN nan NAN\", got \"%s\"\n", buf);
snprintf (buf, sizeof buf, "%a %A %e %E %f %F %g %G",
-qnanval, -qnanval, -qnanval, -qnanval,
-qnanval, -qnanval, -qnanval, -qnanval);
result |= strcmp (buf, "-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected \"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got \"%s\"\n",
buf);
snprintf (buf, sizeof buf, "%a %A %e %E %f %F %g %G",
snanval, snanval, snanval, snanval,
snanval, snanval, snanval, snanval);
result |= strcmp (buf, "nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected \"nan NAN nan NAN nan NAN nan NAN\", got \"%s\"\n", buf);
snprintf (buf, sizeof buf, "%a %A %e %E %f %F %g %G",
msnanval, msnanval, msnanval, msnanval,
msnanval, msnanval, msnanval, msnanval);
result |= strcmp (buf, "-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected \"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got \"%s\"\n",
buf);
infval = DBL_MAX * DBL_MAX;
snprintf (buf, sizeof buf, "%a %A %e %E %f %F %g %G",
infval, infval, infval, infval, infval, infval, infval, infval);
result |= strcmp (buf, "inf INF inf INF inf INF inf INF") != 0;
printf ("expected \"inf INF inf INF inf INF inf INF\", got \"%s\"\n", buf);
snprintf (buf, sizeof buf, "%a %A %e %E %f %F %g %G",
-infval, -infval, -infval, -infval,
-infval, -infval, -infval, -infval);
result |= strcmp (buf, "-inf -INF -inf -INF -inf -INF -inf -INF") != 0;
printf ("expected \"-inf -INF -inf -INF -inf -INF -inf -INF\", got \"%s\"\n",
buf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%a %A %e %E %f %F %g %G",
qnanval, qnanval, qnanval, qnanval,
qnanval, qnanval, qnanval, qnanval);
result |= wcscmp (wbuf, L"nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected L\"nan NAN nan NAN nan NAN nan NAN\", got L\"%S\"\n", wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%a %A %e %E %f %F %g %G",
-qnanval, -qnanval, -qnanval, -qnanval,
-qnanval, -qnanval, -qnanval, -qnanval);
result |= wcscmp (wbuf, L"-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected L\"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got L\"%S\"\n",
wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%a %A %e %E %f %F %g %G",
snanval, snanval, snanval, snanval,
snanval, snanval, snanval, snanval);
result |= wcscmp (wbuf, L"nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected L\"nan NAN nan NAN nan NAN nan NAN\", got L\"%S\"\n", wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%a %A %e %E %f %F %g %G",
msnanval, msnanval, msnanval, msnanval,
msnanval, msnanval, msnanval, msnanval);
result |= wcscmp (wbuf, L"-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected L\"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got L\"%S\"\n",
wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%a %A %e %E %f %F %g %G",
infval, infval, infval, infval, infval, infval, infval, infval);
result |= wcscmp (wbuf, L"inf INF inf INF inf INF inf INF") != 0;
printf ("expected L\"inf INF inf INF inf INF inf INF\", got L\"%S\"\n", wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%a %A %e %E %f %F %g %G",
-infval, -infval, -infval, -infval,
-infval, -infval, -infval, -infval);
result |= wcscmp (wbuf, L"-inf -INF -inf -INF -inf -INF -inf -INF") != 0;
printf ("expected L\"-inf -INF -inf -INF -inf -INF -inf -INF\", got L\"%S\"\n",
wbuf);
lqnanval = NAN;
snprintf (buf, sizeof buf, "%La %LA %Le %LE %Lf %LF %Lg %LG",
lqnanval, lqnanval, lqnanval, lqnanval,
lqnanval, lqnanval, lqnanval, lqnanval);
result |= strcmp (buf, "nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected \"nan NAN nan NAN nan NAN nan NAN\", got \"%s\"\n", buf);
snprintf (buf, sizeof buf, "%La %LA %Le %LE %Lf %LF %Lg %LG",
-lqnanval, -lqnanval, -lqnanval, -lqnanval,
-lqnanval, -lqnanval, -lqnanval, -lqnanval);
result |= strcmp (buf, "-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected \"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got \"%s\"\n",
buf);
snprintf (buf, sizeof buf, "%La %LA %Le %LE %Lf %LF %Lg %LG",
lsnanval, lsnanval, lsnanval, lsnanval,
lsnanval, lsnanval, lsnanval, lsnanval);
result |= strcmp (buf, "nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected \"nan NAN nan NAN nan NAN nan NAN\", got \"%s\"\n", buf);
snprintf (buf, sizeof buf, "%La %LA %Le %LE %Lf %LF %Lg %LG",
lmsnanval, lmsnanval, lmsnanval, lmsnanval,
lmsnanval, lmsnanval, lmsnanval, lmsnanval);
result |= strcmp (buf, "-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected \"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got \"%s\"\n",
buf);
linfval = LDBL_MAX * LDBL_MAX;
snprintf (buf, sizeof buf, "%La %LA %Le %LE %Lf %LF %Lg %LG",
linfval, linfval, linfval, linfval,
linfval, linfval, linfval, linfval);
result |= strcmp (buf, "inf INF inf INF inf INF inf INF") != 0;
printf ("expected \"inf INF inf INF inf INF inf INF\", got \"%s\"\n", buf);
snprintf (buf, sizeof buf, "%La %LA %Le %LE %Lf %LF %Lg %LG",
-linfval, -linfval, -linfval, -linfval,
-linfval, -linfval, -linfval, -linfval);
result |= strcmp (buf, "-inf -INF -inf -INF -inf -INF -inf -INF") != 0;
printf ("expected \"-inf -INF -inf -INF -inf -INF -inf -INF\", got \"%s\"\n",
buf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]),
L"%La %LA %Le %LE %Lf %LF %Lg %LG",
lqnanval, lqnanval, lqnanval, lqnanval,
lqnanval, lqnanval, lqnanval, lqnanval);
result |= wcscmp (wbuf, L"nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected L\"nan NAN nan NAN nan NAN nan NAN\", got L\"%S\"\n", wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]),
L"%La %LA %Le %LE %Lf %LF %Lg %LG",
-lqnanval, -lqnanval, -lqnanval, -lqnanval,
-lqnanval, -lqnanval, -lqnanval, -lqnanval);
result |= wcscmp (wbuf, L"-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected L\"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got L\"%S\"\n",
wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]),
L"%La %LA %Le %LE %Lf %LF %Lg %LG",
lsnanval, lsnanval, lsnanval, lsnanval,
lsnanval, lsnanval, lsnanval, lsnanval);
result |= wcscmp (wbuf, L"nan NAN nan NAN nan NAN nan NAN") != 0;
printf ("expected L\"nan NAN nan NAN nan NAN nan NAN\", got L\"%S\"\n", wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]),
L"%La %LA %Le %LE %Lf %LF %Lg %LG",
lmsnanval, lmsnanval, lmsnanval, lmsnanval,
lmsnanval, lmsnanval, lmsnanval, lmsnanval);
result |= wcscmp (wbuf, L"-nan -NAN -nan -NAN -nan -NAN -nan -NAN") != 0;
printf ("expected L\"-nan -NAN -nan -NAN -nan -NAN -nan -NAN\", got L\"%S\"\n",
wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]),
L"%La %LA %Le %LE %Lf %LF %Lg %LG",
linfval, linfval, linfval, linfval,
linfval, linfval, linfval, linfval);
result |= wcscmp (wbuf, L"inf INF inf INF inf INF inf INF") != 0;
printf ("expected L\"inf INF inf INF inf INF inf INF\", got L\"%S\"\n", wbuf);
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]),
L"%La %LA %Le %LE %Lf %LF %Lg %LG",
-linfval, -linfval, -linfval, -linfval,
-linfval, -linfval, -linfval, -linfval);
result |= wcscmp (wbuf, L"-inf -INF -inf -INF -inf -INF -inf -INF") != 0;
printf ("expected L\"-inf -INF -inf -INF -inf -INF -inf -INF\", got L\"%S\"\n",
wbuf);
DIAG_POP_NEEDS_COMMENT;
return result;
}
int
main (int argc, char *argv[])
{
int result = 0;
result |= t1 ();
result |= t2 ();
result |= t3 ();
result |= F ();
result |= fflush (stdout) == EOF;
return result;
}
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