From 42835696d19cbdb729f9430e46c2b0332a58d84a Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <sezeroz@gmail.com>
Date: Sat, 24 Mar 2018 22:41:17 +0300
Subject: [PATCH] backfort fix for bug #3739: handle %lu, %li and %ld in
 SDL_SetError.

---
 src/SDL_error.c   | 26 ++++++++++++++++++++++++++
 src/SDL_error_c.h |  1 +
 2 files changed, 27 insertions(+)

diff --git a/src/SDL_error.c b/src/SDL_error.c
index 82fd69f7e..cab7b0309 100644
--- a/src/SDL_error.c
+++ b/src/SDL_error.c
@@ -68,6 +68,17 @@ void SDL_SetError (const char *fmt, ...)
 			    case 0:  /* Malformed format string.. */
 				--fmt;
 				break;
+			    case 'l':
+				switch (*fmt++) {
+				case 0:  /* Malformed format string.. */
+					--fmt;
+					break;
+				case 'i': case 'd': case 'u':
+					error->args[error->argc++].value_l =
+								va_arg(ap, long);
+					break;
+				}
+				break;
 			    case 'c':
 			    case 'i':
 			    case 'd':
@@ -139,6 +150,21 @@ char *SDL_GetErrorMsg(char *errstr, int maxlen)
 				while ( (*fmt == '.' || (*fmt >= '0' && *fmt <= '9')) && spot < (tmp+SDL_arraysize(tmp)-2) ) {
 					*spot++ = *fmt++;
 				}
+				if (*fmt == 'l') {
+					*spot++ = *fmt++;
+					*spot++ = *fmt++;
+					*spot++ = '\0';
+					switch (spot[-2]) {
+					case 'i': case 'd': case 'u':
+						len = SDL_snprintf(msg, maxlen, tmp, error->args[argi++].value_l);
+						if (len > 0) {
+						    msg += len;
+						    maxlen -= len;
+						}
+						break;
+					}
+					continue;
+				}
 				*spot++ = *fmt++;
 				*spot++ = '\0';
 				switch (spot[-2]) {
diff --git a/src/SDL_error_c.h b/src/SDL_error_c.h
index 8e54e4254..bf8a52a3e 100644
--- a/src/SDL_error_c.h
+++ b/src/SDL_error_c.h
@@ -50,6 +50,7 @@ typedef struct SDL_error {
 		unsigned char value_c;
 #endif
 		int value_i;
+		long value_l;
 		double value_f;
 		char buf[ERR_MAX_STRLEN];
 	} args[ERR_MAX_ARGS];