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GNU C Library master sources branch hjl/pr21982/master created. glibc-2.26-162-gf951e4a
- From: hjl at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 22 Aug 2017 12:35:28 -0000
- Subject: GNU C Library master sources branch hjl/pr21982/master created. glibc-2.26-162-gf951e4a
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f951e4aa927efdf3112be92006b11d31cb75ef2b
commit f951e4aa927efdf3112be92006b11d31cb75ef2b
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sun Aug 20 10:11:38 2017 -0700
string/stratcliff.c: Replace int with size_t [BZ #21982]
Fix GCC 7 errors when string/stratcliff.c is compiled with -O3:
stratcliff.c: In function â??do_testâ??:
cc1: error: assuming signed overflow does not occur when assuming that (X - c) <= X is always true [-Werror=strict-overflow]
[BZ #21982]
* string/stratcliff.c (do_test): Declare size, nchars, inner,
middle and outer with size_t instead of int. Repleace %d and
%Zd with %zu in printf. Update "MAX (0, nchars - 128)" and
"MAX (outer, nchars - 64)" to support unsigned outer and
nchars. Also exit loop when outer == 0.
diff --git a/string/stratcliff.c b/string/stratcliff.c
index e28b0c5..4320336 100644
--- a/string/stratcliff.c
+++ b/string/stratcliff.c
@@ -58,8 +58,8 @@
int
do_test (void)
{
- int size = sysconf (_SC_PAGESIZE);
- int nchars = size / sizeof (CHAR);
+ size_t size = sysconf (_SC_PAGESIZE);
+ size_t nchars = size / sizeof (CHAR);
CHAR *adr;
CHAR *dest;
int result = 0;
@@ -80,7 +80,17 @@ do_test (void)
}
else
{
- int inner, middle, outer;
+ size_t inner, middle, outer, nchars64, max128;
+
+ if (nchars > 64)
+ nchars64 = nchars - 64;
+ else
+ nchars64 = 0;
+
+ if (nchars > 128)
+ max128 = nchars - 128;
+ else
+ max128 = 0;
mprotect (adr, size, PROT_NONE);
mprotect (adr + 2 * nchars, size, PROT_NONE);
@@ -93,59 +103,65 @@ do_test (void)
MEMSET (adr, L('T'), nchars);
/* strlen/wcslen test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
+ for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if (STRLEN (&adr[outer]) != (size_t) (inner - outer))
{
- printf ("%s flunked for outer = %d, inner = %d\n",
+ printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STRLEN), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
+ if (outer == 0)
+ break;
}
/* strnlen/wcsnlen test */
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars; outer >= max128; --outer)
{
- for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
+ for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if (STRNLEN (&adr[outer], inner - outer + 1)
!= (size_t) (inner - outer))
{
- printf ("%s flunked for outer = %d, inner = %d\n",
+ printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STRNLEN), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
+ if (outer == 0)
+ break;
}
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars; outer >= max128; --outer)
{
- for (inner = MAX (outer, nchars - 64); inner <= nchars; ++inner)
+ for (inner = MAX (outer, nchars64); inner <= nchars; ++inner)
{
if (STRNLEN (&adr[outer], inner - outer)
!= (size_t) (inner - outer))
{
- printf ("%s flunked bounded for outer = %d, inner = %d\n",
+ printf ("%s flunked bounded for outer = %zu, inner = %zu\n",
STRINGIFY (STRNLEN), outer, inner);
result = 1;
}
}
+ if (outer == 0)
+ break;
}
/* strchr/wcschr test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
+ for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
for (inner = middle; inner < nchars; ++inner)
{
@@ -158,8 +174,8 @@ do_test (void)
|| (inner != middle
&& (cp - &adr[outer]) != middle - outer))
{
- printf ("%s flunked for outer = %d, middle = %d, "
- "inner = %d\n",
+ printf ("%s flunked for outer = %zu, middle = %zu, "
+ "inner = %zu\n",
STRINGIFY (STRCHR), outer, middle, inner);
result = 1;
}
@@ -168,6 +184,8 @@ do_test (void)
adr[middle] = L('T');
}
}
+ if (outer == 0)
+ break;
}
/* Special test. */
@@ -180,9 +198,9 @@ do_test (void)
}
/* strrchr/wcsrchr test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
+ for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
for (inner = middle; inner < nchars; ++inner)
{
@@ -195,8 +213,8 @@ do_test (void)
|| (inner != middle
&& (cp - &adr[outer]) != middle - outer))
{
- printf ("%s flunked for outer = %d, middle = %d, "
- "inner = %d\n",
+ printf ("%s flunked for outer = %zu, middle = %zu, "
+ "inner = %zu\n",
STRINGIFY (STRRCHR), outer, middle, inner);
result = 1;
}
@@ -205,12 +223,14 @@ do_test (void)
adr[middle] = L('T');
}
}
+ if (outer == 0)
+ break;
}
/* memchr test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
+ for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('V');
@@ -218,32 +238,36 @@ do_test (void)
if (cp - &adr[outer] != middle - outer)
{
- printf ("%s flunked for outer = %d, middle = %d\n",
+ printf ("%s flunked for outer = %zu, middle = %zu\n",
STRINGIFY (MEMCHR), outer, middle);
result = 1;
}
adr[middle] = L('T');
}
+ if (outer == 0)
+ break;
}
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars; outer >= max128; --outer)
{
CHAR *cp = MEMCHR (&adr[outer], L('V'), nchars - outer);
if (cp != NULL)
{
- printf ("%s flunked for outer = %d\n",
+ printf ("%s flunked for outer = %zu\n",
STRINGIFY (MEMCHR), outer);
result = 1;
}
+ if (outer == 0)
+ break;
}
/* These functions only exist for single-byte characters. */
#ifndef WCSTEST
/* rawmemchr test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
+ for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('V');
@@ -251,19 +275,21 @@ do_test (void)
if (cp - &adr[outer] != middle - outer)
{
- printf ("%s flunked for outer = %d, middle = %d\n",
+ printf ("%s flunked for outer = %zu, middle = %zu\n",
STRINGIFY (rawmemchr), outer, middle);
result = 1;
}
adr[middle] = L('T');
}
+ if (outer == 0)
+ break;
}
/* memrchr test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
+ for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('V');
@@ -271,44 +297,50 @@ do_test (void)
if (cp - &adr[outer] != middle - outer)
{
- printf ("%s flunked for outer = %d, middle = %d\n",
+ printf ("%s flunked for outer = %zu, middle = %zu\n",
STRINGIFY (memrchr), outer, middle);
result = 1;
}
adr[middle] = L('T');
}
+ if (outer == 0)
+ break;
}
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars; outer >= max128; --outer)
{
CHAR *cp = memrchr (&adr[outer], L('V'), nchars - outer);
if (cp != NULL)
{
- printf ("%s flunked for outer = %d\n",
+ printf ("%s flunked for outer = %zu\n",
STRINGIFY (memrchr), outer);
result = 1;
}
+ if (outer == 0)
+ break;
}
#endif
/* strcpy/wcscpy test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
+ for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if (STRCPY (dest, &adr[outer]) != dest
|| STRLEN (dest) != (size_t) (inner - outer))
{
- printf ("%s flunked for outer = %d, inner = %d\n",
+ printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STRCPY), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
+ if (outer == 0)
+ break;
}
/* strcmp/wcscmp tests */
@@ -322,14 +354,14 @@ do_test (void)
if (STRCMP (adr + middle, dest + nchars - outer) <= 0)
{
- printf ("%s 1 flunked for outer = %d, middle = %d\n",
+ printf ("%s 1 flunked for outer = %zu, middle = %zu\n",
STRINGIFY (STRCMP), outer, middle);
result = 1;
}
if (STRCMP (dest + nchars - outer, adr + middle) >= 0)
{
- printf ("%s 2 flunked for outer = %d, middle = %d\n",
+ printf ("%s 2 flunked for outer = %zu, middle = %zu\n",
STRINGIFY (STRCMP), outer, middle);
result = 1;
}
@@ -348,16 +380,16 @@ do_test (void)
{
if (STRNCMP (adr + middle, dest + nchars - outer, inner) != 0)
{
- printf ("%s 1 flunked for outer = %d, middle = %d, "
- "inner = %d\n",
+ printf ("%s 1 flunked for outer = %zu, middle = %zu, "
+ "inner = %zu\n",
STRINGIFY (STRNCMP), outer, middle, inner);
result = 1;
}
if (STRNCMP (dest + nchars - outer, adr + middle, inner) != 0)
{
- printf ("%s 2 flunked for outer = %d, middle = %d, "
- "inner = %d\n",
+ printf ("%s 2 flunked for outer = %zu, middle = %zu, "
+ "inner = %zu\n",
STRINGIFY (STRNCMP), outer, middle, inner);
result = 1;
}
@@ -365,14 +397,14 @@ do_test (void)
if (STRNCMP (adr + middle, dest + nchars - outer, outer) >= 0)
{
- printf ("%s 1 flunked for outer = %d, middle = %d, full\n",
+ printf ("%s 1 flunked for outer = %zu, middle = %zu, full\n",
STRINGIFY (STRNCMP), outer, middle);
result = 1;
}
if (STRNCMP (dest + nchars - outer, adr + middle, outer) <= 0)
{
- printf ("%s 2 flunked for outer = %d, middle = %d, full\n",
+ printf ("%s 2 flunked for outer = %zu, middle = %zu, full\n",
STRINGIFY (STRNCMP), outer, middle);
result = 1;
}
@@ -380,7 +412,7 @@ do_test (void)
/* strncpy/wcsncpy tests */
adr[nchars - 1] = L('T');
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars; outer >= max128; --outer)
{
size_t len;
@@ -389,17 +421,19 @@ do_test (void)
if (STRNCPY (dest, &adr[outer], len) != dest
|| MEMCMP (dest, &adr[outer], len) != 0)
{
- printf ("outer %s flunked for outer = %d, len = %Zd\n",
+ printf ("outer %s flunked for outer = %zu, len = %zu\n",
STRINGIFY (STRNCPY), outer, len);
result = 1;
}
}
+ if (outer == 0)
+ break;
}
adr[nchars - 1] = L('\0');
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
+ for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
size_t len;
@@ -413,8 +447,8 @@ do_test (void)
|| (inner - outer < len
&& STRLEN (dest) != (inner - outer)))
{
- printf ("%s flunked for outer = %d, inner = %d, "
- "len = %Zd\n",
+ printf ("%s flunked for outer = %zu, inner = %zu, "
+ "len = %zu\n",
STRINGIFY (STRNCPY), outer, inner, len);
result = 1;
}
@@ -424,8 +458,8 @@ do_test (void)
|| (inner - outer < len
&& STRLEN (dest + 1) != (inner - outer)))
{
- printf ("%s+1 flunked for outer = %d, inner = %d, "
- "len = %Zd\n",
+ printf ("%s+1 flunked for outer = %zu, inner = %zu, "
+ "len = %zu\n",
STRINGIFY (STRNCPY), outer, inner, len);
result = 1;
}
@@ -433,29 +467,33 @@ do_test (void)
adr[inner] = L('T');
}
+ if (outer == 0)
+ break;
}
/* stpcpy/wcpcpy test */
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
+ for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if ((STPCPY (dest, &adr[outer]) - dest) != inner - outer)
{
- printf ("%s flunked for outer = %d, inner = %d\n",
+ printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STPCPY), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
+ if (outer == 0)
+ break;
}
/* stpncpy/wcpncpy test */
adr[nchars - 1] = L('T');
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars; outer >= max128; --outer)
{
size_t len;
@@ -464,17 +502,19 @@ do_test (void)
if (STPNCPY (dest, &adr[outer], len) != dest + len
|| MEMCMP (dest, &adr[outer], len) != 0)
{
- printf ("outer %s flunked for outer = %d, len = %Zd\n",
+ printf ("outer %s flunked for outer = %zu, len = %zu\n",
STRINGIFY (STPNCPY), outer, len);
result = 1;
}
}
+ if (outer == 0)
+ break;
}
adr[nchars - 1] = L('\0');
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
+ for (outer = nchars - 1; outer >= max128; --outer)
{
- for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
+ for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('\0');
@@ -483,8 +523,8 @@ do_test (void)
if ((STPNCPY (dest, &adr[outer], inner) - dest)
!= MIN (inner, middle - outer))
{
- printf ("%s flunked for outer = %d, middle = %d, "
- "inner = %d\n",
+ printf ("%s flunked for outer = %zu, middle = %zu, "
+ "inner = %zu\n",
STRINGIFY (STPNCPY), outer, middle, inner);
result = 1;
}
@@ -492,66 +532,84 @@ do_test (void)
adr[middle] = L('T');
}
+ if (outer == 0)
+ break;
}
/* memcpy/wmemcpy test */
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
- for (inner = 0; inner < nchars - outer; ++inner)
- if (MEMCPY (dest, &adr[outer], inner) != dest)
- {
- printf ("%s flunked for outer = %d, inner = %d\n",
- STRINGIFY (MEMCPY), outer, inner);
- result = 1;
- }
+ for (outer = nchars; outer >= max128; --outer)
+ {
+ for (inner = 0; inner < nchars - outer; ++inner)
+ if (MEMCPY (dest, &adr[outer], inner) != dest)
+ {
+ printf ("%s flunked for outer = %zu, inner = %zu\n",
+ STRINGIFY (MEMCPY), outer, inner);
+ result = 1;
+ }
+ if (outer == 0)
+ break;
+ }
/* mempcpy/wmempcpy test */
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
- for (inner = 0; inner < nchars - outer; ++inner)
- if (MEMPCPY (dest, &adr[outer], inner) != dest + inner)
- {
- printf ("%s flunked for outer = %d, inner = %d\n",
- STRINGIFY (MEMPCPY), outer, inner);
- result = 1;
- }
+ for (outer = nchars; outer >= max128; --outer)
+ {
+ for (inner = 0; inner < nchars - outer; ++inner)
+ if (MEMPCPY (dest, &adr[outer], inner) != dest + inner)
+ {
+ printf ("%s flunked for outer = %zu, inner = %zu\n",
+ STRINGIFY (MEMPCPY), outer, inner);
+ result = 1;
+ }
+ if (outer == 0)
+ break;
+ }
/* This function only exists for single-byte characters. */
#ifndef WCSTEST
/* memccpy test */
memset (adr, '\0', nchars);
- for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
- for (inner = 0; inner < nchars - outer; ++inner)
- if (memccpy (dest, &adr[outer], L('\1'), inner) != NULL)
- {
- printf ("memccpy flunked full copy for outer = %d, inner = %d\n",
- outer, inner);
- result = 1;
- }
- for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
- for (middle = 0; middle < nchars - outer; ++middle)
- {
- memset (dest, L('\2'), middle + 1);
- for (inner = 0; inner < middle; ++inner)
+ for (outer = nchars; outer >= max128; --outer)
+ {
+ for (inner = 0; inner < nchars - outer; ++inner)
+ if (memccpy (dest, &adr[outer], L('\1'), inner) != NULL)
{
- adr[outer + inner] = L('\1');
-
- if (memccpy (dest, &adr[outer], '\1', middle + 128)
- != dest + inner + 1)
- {
- printf ("\
-memccpy flunked partial copy for outer = %d, middle = %d, inner = %d\n",
- outer, middle, inner);
- result = 1;
- }
- else if (dest[inner + 1] != L('\2'))
- {
- printf ("\
-memccpy copied too much for outer = %d, middle = %d, inner = %d\n",
- outer, middle, inner);
- result = 1;
- }
- adr[outer + inner] = L('\0');
+ printf ("memccpy flunked full copy for outer = %zu, inner = %zu\n",
+ outer, inner);
+ result = 1;
}
- }
+ if (outer == 0)
+ break;
+ }
+ for (outer = nchars - 1; outer >= max128; --outer)
+ {
+ for (middle = 0; middle < nchars - outer; ++middle)
+ {
+ memset (dest, L('\2'), middle + 1);
+ for (inner = 0; inner < middle; ++inner)
+ {
+ adr[outer + inner] = L('\1');
+
+ if (memccpy (dest, &adr[outer], '\1', middle + 128)
+ != dest + inner + 1)
+ {
+ printf ("\
+ memccpy flunked partial copy for outer = %zu, middle = %zu, inner = %zu\n",
+ outer, middle, inner);
+ result = 1;
+ }
+ else if (dest[inner + 1] != L('\2'))
+ {
+ printf ("\
+ memccpy copied too much for outer = %zu, middle = %zu, inner = %zu\n",
+ outer, middle, inner);
+ result = 1;
+ }
+ adr[outer + inner] = L('\0');
+ }
+ }
+ if (outer == 0)
+ break;
+ }
#endif
}
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