DEVEL15-gcc42-integer-overflow-fix-20071007

fix issue where gcc 4.2 compiled kernel modules were breaking on linux

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This delta was composed from multiple commits as part of the CVS->Git migration.
The checkin message with each commit was inconsistent.
The following are the additional commit messages.
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with fix from Hans-Werner Pulsen

====================

with fix from Hans-Werner Pulsen

(cherry picked from commit 7832148ae0e8c9f17a2ac2eb879c7b2fdf69403e)

diff --git a/src/dir/dir.c b/src/dir/dir.c
index b7f40a3..cfbf2d3 100644 (file)
--- a/src/dir/dir.c
+++ b/src/dir/dir.c
@@ -478,7 +478,7 @@ DirHash(register char *string)
 {
     /* Hash a string to a number between 0 and NHASHENT. */
     register unsigned char tc;
-    register int hval;
+    unsigned int hval;
     register int tval;
     hval = 0;
     while ((tc = (*string++))) {
@@ -488,7 +488,7 @@ DirHash(register char *string)
     tval = hval & (NHASHENT - 1);
     if (tval == 0)
        return tval;
-    else if (hval < 0)
+    else if (hval >= 1<<31)
        tval = NHASHENT - tval;
     return tval;
 }