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D29536.id87691.diff
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D29536.id87691.diff
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Index: lib/libc/string/memset.c
===================================================================
--- lib/libc/string/memset.c
+++ lib/libc/string/memset.c
@@ -42,7 +42,7 @@
#include <limits.h>
-#define wsize sizeof(u_int)
+#define wsize sizeof(u_long)
#define wmask (wsize - 1)
#ifdef BZERO
@@ -67,7 +67,7 @@
{
size_t t;
#ifndef BZERO
- u_int c;
+ u_long c;
#endif
u_char *dst;
@@ -84,6 +84,9 @@
*
* but we use a minimum of 3 here since the overhead of the code
* to do word writes is substantial.
+ *
+ * TODO: This threshold might not be sensible for 64-bit u_long.
+ * We should benchmark and revisit this decision.
*/
if (length < 3 * wsize) {
while (length != 0) {
@@ -95,12 +98,12 @@
#ifndef BZERO
if ((c = (u_char)c0) != 0) { /* Fill the word. */
- c = (c << 8) | c; /* u_int is 16 bits. */
-#if UINT_MAX > 0xffff
- c = (c << 16) | c; /* u_int is 32 bits. */
+ c = (c << 8) | c; /* u_long is 16 bits. */
+#if ULONG_MAX > 0xffff
+ c = (c << 16) | c; /* u_long is 32 bits. */
#endif
-#if UINT_MAX > 0xffffffff
- c = (c << 32) | c; /* u_int is 64 bits. */
+#if ULONG_MAX > 0xffffffff
+ c = (c << 32) | c; /* u_long is 64 bits. */
#endif
}
#endif
@@ -116,7 +119,7 @@
/* Fill words. Length was >= 2*words so we know t >= 1 here. */
t = length / wsize;
do {
- *(u_int *)dst = WIDEVAL;
+ *(u_long *)(void *)dst = WIDEVAL;
dst += wsize;
} while (--t != 0);
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D29536: libc/string/memset.c: Use unsigned long for stores
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