overlaytopleft/games-fps/gzdoom/files/0046-avoid-arithmetics-with-literal-null-pointers-in-Pars.patch

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From 43131effaa913a40fe10c15836e272c484b7c4f7 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Sun, 26 Mar 2023 09:49:40 +0200
Subject: [PATCH 46/51] - avoid arithmetics with literal null pointers in
ParseCommandLine.
Also avoid using longs.
---
src/m_misc.cpp | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/src/m_misc.cpp b/src/m_misc.cpp
index 6e40991da..45af80cec 100644
--- a/src/m_misc.cpp
+++ b/src/m_misc.cpp
@@ -74,7 +74,7 @@ CVAR(String, screenshot_type, "png", CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
CVAR(String, screenshot_dir, "", CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
EXTERN_CVAR(Bool, longsavemessages);
-static long ParseCommandLine (const char *args, int *argc, char **argv);
+static size_t ParseCommandLine (const char *args, int *argc, char **argv);
//---------------------------------------------------------------------------
@@ -101,7 +101,7 @@ void M_FindResponseFile (void)
TArray<uint8_t> file;
int argc = 0;
int size;
- long argsize = 0;
+ size_t argsize = 0;
int index;
// Any more response files after the limit will be removed from the
@@ -179,17 +179,19 @@ void M_FindResponseFile (void)
// This is just like the version in c_dispatch.cpp, except it does not
// do cvar expansion.
-static long ParseCommandLine (const char *args, int *argc, char **argv)
+static size_t ParseCommandLine (const char *args, int *argc, char **argv)
{
int count;
+ char* buffstart;
char *buffplace;
count = 0;
- buffplace = NULL;
+ buffstart = NULL;
if (argv != NULL)
{
- buffplace = argv[0];
+ buffstart = argv[0];
}
+ buffplace = buffstart;
for (;;)
{
@@ -257,7 +259,7 @@ static long ParseCommandLine (const char *args, int *argc, char **argv)
{
*argc = count;
}
- return (long)(buffplace - (char *)0);
+ return (buffplace - buffstart);
}
--
2.39.3