From 0217b7cdd7427d88463db506c47a2ab9a982c9dc Mon Sep 17 00:00:00 2001
From: "Gregory S. Read" <18175637+readgs@users.noreply.github.com>
Date: Wed, 3 Apr 2002 04:20:07 +0000
Subject: [PATCH] -Added type casting that Ryan needs to approve. -MSVC
 complained about implicit 64-bit to 32-bit conversions.

---
 archivers/grp.c | 13 +++++++++----
 archivers/zip.c |  8 ++++++--
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/archivers/grp.c b/archivers/grp.c
index df6a9a1..1d6e88c 100644
--- a/archivers/grp.c
+++ b/archivers/grp.c
@@ -130,7 +130,8 @@ static PHYSFS_sint64 GRP_read(FileHandle *handle, void *buffer,
     void *fh = finfo->handle;
     PHYSFS_sint64 curPos = __PHYSFS_platformTell(fh);
     PHYSFS_uint64 bytesLeft = (finfo->startPos + finfo->size) - curPos;
-    PHYSFS_uint32 objsLeft = bytesLeft / objSize;
+    /*!!! If objSize is '1' it's quite likely that objsLeft will be greater than 32-bits */
+    PHYSFS_uint32 objsLeft = (PHYSFS_uint32)(bytesLeft / objSize);
 
     if (objsLeft < objCount)
         objCount = objsLeft;
@@ -157,7 +158,8 @@ static PHYSFS_sint64 GRP_tell(FileHandle *handle)
 static int GRP_seek(FileHandle *handle, PHYSFS_uint64 offset)
 {
     GRPfileinfo *finfo = (GRPfileinfo *) (handle->opaque);
-    int newPos = finfo->startPos + offset;
+    /*!!! Why isn't newPos a 64-bit??? */
+    int newPos = (int)(finfo->startPos + offset);
 
     BAIL_IF_MACRO(offset < 0, ERR_INVALID_ARGUMENT, 0);
     BAIL_IF_MACRO(newPos > finfo->startPos + finfo->size, ERR_PAST_EOF, 0);
@@ -287,7 +289,8 @@ static LinkedStringList *GRP_enumerateFiles(DirHandle *h,
     PHYSFS_uint8 buf[16];
     GRPinfo *g = (GRPinfo *) (h->opaque);
     void *fh = g->handle;
-    int i;
+    /*!!! This should be a uint32 and not an int...look at loops below */
+    PHYSFS_uint32 i;
     LinkedStringList *retval = NULL;
     LinkedStringList *l = NULL;
     LinkedStringList *prev = NULL;
@@ -299,6 +302,7 @@ static LinkedStringList *GRP_enumerateFiles(DirHandle *h,
         /* jump to first file entry... */
     BAIL_IF_MACRO(!__PHYSFS_platformSeek(fh, 16), NULL, NULL);
 
+    /*!!! i needs to be unsigned */
     for (i = 0; i < g->totalEntries; i++)
     {
         BAIL_IF_MACRO(__PHYSFS_platformRead(fh, buf, 16, 1) != 1, NULL, retval);
@@ -337,7 +341,8 @@ static PHYSFS_sint32 getFileEntry(DirHandle *h, const char *name,
     PHYSFS_uint8 buf[16];
     GRPinfo *g = (GRPinfo *) (h->opaque);
     void *fh = g->handle;
-    int i;
+    /*!!! This should be a uint32 and not an int...look at loops below */
+    PHYSFS_uint32 i;
     char *ptr;
     int retval = (g->totalEntries + 1) * 16; /* offset of raw file data */
 
diff --git a/archivers/zip.c b/archivers/zip.c
index e0aac8b..f66e3ef 100644
--- a/archivers/zip.c
+++ b/archivers/zip.c
@@ -168,7 +168,9 @@ static int ZIP_seek(FileHandle *handle, PHYSFS_uint64 offset)
 
     while (offset > 0)
     {
-        PHYSFS_uint32 chunk = (offset > bufsize) ? bufsize : offset;
+        /* !!! - RYAN, CHECK THIS CAST */
+        /* !!! This should be okay since offset will be <= bufsize */
+        PHYSFS_uint32 chunk = (offset > bufsize) ? bufsize : (PHYSFS_uint32)offset;
         PHYSFS_sint32 rc = unzReadCurrentFile(fh, buf, chunk);
         BAIL_IF_MACRO(rc == 0, ERR_IO_ERROR, 0);  /* shouldn't happen. */
         BAIL_IF_MACRO(rc == UNZ_ERRNO, ERR_IO_ERROR, 0);
@@ -271,7 +273,9 @@ static char *ZIP_realpath(unzFile fh, unz_file_info *info, ZIPentry *entry)
 static int version_does_symlinks(uLong version)
 {
     int retval = 0;
-    unsigned char hosttype = ((version >> 8) & 0xFF);
+    /* !!! - RYAN, CHECK THIS CAST */
+    /* !!! - You AND the result with 0xFF, so it can't be larger than 0xFF */
+    unsigned char hosttype = (unsigned char)((version >> 8) & 0xFF);
 
     /*
      * These are the platforms that can build an archive with symlinks,