fix snprintf warnings for format strings

Author: demoitem

m3-libs/m3core/src/unix/Common/UnixC.c

@@ -111,8 +111,8 @@ int __cdecl Unix__open (const char* path, int flags, m3_mode_t mode)
     result = open (path, flags, (mode_t)mode);
     if (m3core_trace.s.open)
     {
-        char* buf = (char*)alloca (256 + strlen (path));
-	int maxlen = sizeof buf;
+        int maxlen = (256 + strlen (path));
+        char* buf = (char*)alloca (maxlen);
         int len = snprintf (buf, maxlen, "open (%s):%d\n", path, result);
         write (1, buf, len);
     }
@@ -137,8 +137,8 @@ int __cdecl Unix__creat (const char* path, m3_mode_t mode)
     result = creat (path, mode);
     if (m3core_trace.s.creat)
     {
-        char* buf = (char*)alloca (256 + strlen (path));
-	int maxlen = sizeof buf;
+        int maxlen = (256 + strlen (path));
+        char* buf = (char*)alloca (maxlen);
         int len = snprintf (buf, maxlen, "creat (%s):%d\n", path, result);
         write (1, buf, len);
     }
@@ -160,8 +160,8 @@ int __cdecl Unix__close (int fd)
     result = close (fd);
     if (m3core_trace.s.close)
     {
-        char* buf = (char*)alloca (256);
-	int maxlen = sizeof buf;
+	int maxlen = 256;
+        char* buf = (char*)alloca (maxlen);
         int len = snprintf (buf, maxlen, "close (%d):%d\n", fd, result);
         write (1, buf, len);
     }
@@ -182,8 +182,8 @@ int __cdecl Unix__chdir (const char* path)
     result = chdir (path);
     if (m3core_trace.s.chdir)
     {
-        char* buf = (char*)alloca (256 + strlen (path));
-	int maxlen = sizeof buf;
+        int maxlen = (256 + strlen (path));
+        char* buf = (char*)alloca (maxlen);
         int len = snprintf (buf, maxlen, "chdir (%s):%d\n", path, result);
         write (1, buf, len);
     }

m3-libs/m3core/src/unix/Common/UstatC.c

@@ -77,8 +77,8 @@ Ustat__stat(const char* path, m3_stat_t* m3st)
 #ifndef _WIN32
     if (m3core_trace.s.stat)
     {
-        char* buf = (char*)alloca (256 + strlen (path));
-	int maxlen = sizeof buf;
+        int maxlen = (256 + strlen (path));
+        char* buf = (char*)alloca (maxlen);
         int len = snprintf (buf, maxlen, "stat (%s):mode:%X,%d\n", path, (unsigned)st.st_mode, result);
         write (1, buf, len);
     }
@@ -108,8 +108,8 @@ Ustat__fstat(int fd, m3_stat_t* m3st)
 #ifndef _WIN32
     if (m3core_trace.s.fstat)
     {
-        char* buf = (char*)alloca (256);
-	int maxlen = sizeof buf;
+	int maxlen = 256;
+        char* buf = (char*)alloca (maxlen);
         int len = snprintf (buf, maxlen, "fstat (%d):mode:%X,%d\n", fd, (unsigned)st.st_mode, result);
         write (1, buf, len);
     }

m3-libs/m3core/src/unix/Common/Uuio.c

@@ -23,8 +23,8 @@ Uuio__write (int fd, const void* buf, size_t n)
     result = write (fd, buf, n);
     if (m3core_trace.s.write)
     {
-        char* buf = (char*)alloca (256);
-	int maxlen = sizeof buf;
+	int maxlen = 256;
+        char* buf = (char*)alloca (maxlen);
         int len = snprintf (buf, maxlen, "write (fd:%d, buf:%p, n:%ld):%ld\n", fd, buf, (long)n, (long)result);
         write (1, buf, len);
     }