commit 0a1645d9a3e7381a58c946b7676c917ca50b9590
author Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de> Sun Aug 15 18:44:06 1999 +0000
committer Alexandre Julliard <julliard@winehq.org> Sun Aug 15 18:44:06 1999 +0000
tree d89462276d358cda402bc96ca8f2bed257bfed19
parent 1e5f0fea9f1f701fe39527617f262ac5d8880b3e

Inhibit wraparound in comparison.

memory/selector.c

diff --git a/memory/selector.c b/memory/selector.c
index 86c50e8..6cab776 100644
--- a/memory/selector.c
+++ b/memory/selector.c
@@ -442,8 +442,8 @@
     if (IS_SELECTOR_FREE(sel)) return TRUE;
     LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
     if ((entry.type == SEGMENT_CODE) && entry.read_only) return TRUE;
-    if (strlen(PTR_SEG_TO_LIN(ptr)) < size) size = strlen(PTR_SEG_TO_LIN(ptr));
-    if (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel)) return TRUE;
+    if (strlen(PTR_SEG_TO_LIN(ptr)) < size) size = strlen(PTR_SEG_TO_LIN(ptr)) + 1;
+    if (size && (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel))) return TRUE;
     return FALSE;
 }
 
@@ -461,7 +461,7 @@
     if (IS_SELECTOR_FREE(sel)) return TRUE;
     LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
     if ((entry.type == SEGMENT_CODE) && entry.read_only) return TRUE;
-    if (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel)) return TRUE;
+    if (size && (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel))) return TRUE;
     return FALSE;
 }
 
@@ -479,7 +479,7 @@
     if (IS_SELECTOR_FREE(sel)) return TRUE;
     LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
     if ((entry.type == SEGMENT_CODE) || entry.read_only) return TRUE;
-    if (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel)) return TRUE;
+    if (size && (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel))) return TRUE;
     return FALSE;
 }