stdio: fix bypassed __scanf_end at end of scanf

src/stdio/fscanf.c

@@ -10,7 +10,9 @@ int fscanf(FILE * restrict fp, char const * restrict fmt, ...)
 	va_list args;
 	va_start(args, fmt);
 
+	__scanf_start(&in);
 	int count = __scanf(&in, fmt, &args);
+	__scanf_end(&in);
 
 	va_end(args);
 	return count;

src/stdio/scanf.c

@@ -10,7 +10,9 @@ int scanf(char const * restrict fmt, ...)
 	va_list args;
 	va_start(args, fmt);
 
+	__scanf_start(&in);
 	int count = __scanf(&in, fmt, &args);
+	__scanf_end(&in);
 
 	va_end(args);
 	return count;

src/stdio/scanf/scan.c

@@ -231,10 +231,6 @@ int __scanf(
 	/* Number of successful assignments */
 	int validrets = 0;
 
-	__scanf_start( in );
-
-	// TODO: No __scanf_end() in any of the "return validrets"!!
-
 	for(int pos = 0; format[pos]; pos++) {
 		if(format[pos] == ' ') {
 			__skip_spaces(in);
@@ -366,6 +362,5 @@ int __scanf(
 		}
 	}
 
-	__scanf_end( in );
 	return validrets;
 }

src/stdio/sscanf.c

@@ -3,7 +3,6 @@
 
 int sscanf(const char * restrict str, char const * restrict fmt, ...)
 {
-	/* This is valid even if str=NULL. */
 	struct __scanf_input in = {
 		.str = str,
 	};
@@ -11,7 +10,9 @@ int sscanf(const char * restrict str, char const * restrict fmt, ...)
 	va_list args;
 	va_start(args, fmt);
 
+	__scanf_start(&in);
 	int count = __scanf(&in, fmt, &args);
+	__scanf_end(&in);
 
 	va_end(args);
 	return count;

src/stdio/vfscanf.c

@@ -7,5 +7,8 @@ int vfscanf(FILE * restrict fp, char const * restrict fmt, va_list args)
 		.fp = fp,
 	};
 
-	return __scanf(&in, fmt, &args);
+	__scanf_start(&in);
+	int rc = __scanf(&in, fmt, &args);
+	__scanf_end(&in);
+	return rc;
 }

src/stdio/vscanf.c

@@ -7,5 +7,8 @@ int vscanf(char const * restrict fmt, va_list args)
 		.fp = stdin,
 	};
 
-	return __scanf(&in, fmt, &args);
+	__scanf_start(&in);
+	int rc = __scanf(&in, fmt, &args);
+	__scanf_end(&in);
+	return rc;
 }

src/stdio/vsscanf.c

@@ -8,5 +8,8 @@ int vsscanf(const char * restrict str, char const * restrict fmt, va_list args)
 		.str = str,
 	};
 
-	return __scanf(&in, fmt, &args);
+	__scanf_start(&in);
+	int rc = __scanf(&in, fmt, &args);
+	__scanf_end(&in);
+	return rc;
 }