Subject: Try to use the "right" off_t_max
Origin: FILE5_34-13-gcd752e7c <https://github.com/file/file/commit/FILE5_34-13-gcd752e7c>
Upstream-Author: Christos Zoulas <christos@zoulas.com>
Date: Wed Aug 1 09:53:18 2018 +0000

--- a/src/apprentice.c
+++ b/src/apprentice.c
@@ -55,11 +55,6 @@
 #include <limits.h>
 #endif
 
-#ifndef SSIZE_MAX
-#define MAXMAGIC_SIZE        ((ssize_t)0x7fffffff)
-#else
-#define MAXMAGIC_SIZE        SSIZE_MAX
-#endif
 
 #define	EATAB {while (isascii((unsigned char) *l) && \
 		      isspace((unsigned char) *l))  ++l;}
@@ -300,6 +295,15 @@
 	return p->type;
 }
 
+private off_t
+maxoff_t(void) {
+	if (sizeof(off_t) == sizeof(int))
+		return CAST(off_t, INT_MAX);
+	if (sizeof(off_t) == sizeof(long))
+		return CAST(off_t, LONG_MAX);
+	return 0x7fffffff;
+}
+
 private int
 get_standard_integer_type(const char *l, const char **t)
 {
@@ -2950,7 +2954,7 @@
 		file_error(ms, errno, "cannot stat `%s'", dbname);
 		goto error;
 	}
-	if (st.st_size < 8 || st.st_size > MAXMAGIC_SIZE) {
+	if (st.st_size < 8 || st.st_size > maxoff_t()) {
 		file_error(ms, 0, "file `%s' is too %s", dbname,
 		    st.st_size < 8 ? "small" : "large");
 		goto error;