Fix reading options files on platforms with unsigned char
This fixes EOF detection on platforms where char is unsigned, as
comparing it with EOF could never return true there.
Thanks gcc for the warning "comparison is always true due to limited
range of data type [-Wtype-limits]".
diff --git a/Source/Modules/swigmain.cxx b/Source/Modules/swigmain.cxx
index 8d52af1..84ac742 100644
--- a/Source/Modules/swigmain.cxx
+++ b/Source/Modules/swigmain.cxx
@@ -163,7 +163,7 @@
i = 1;
while (i < new_argc) {
if (new_argv[i] && new_argv[i][0] == '@' && (f = fopen(&new_argv[i][1], "r"))) {
- char c;
+ int ci;
char *b;
char *be = &buffer[BUFFER_SIZE];
int quote = 0;
@@ -174,7 +174,8 @@
insert = i;
b = buffer;
- while ((c = fgetc(f)) != EOF) {
+ while ((ci = fgetc(f)) != EOF) {
+ const char c = static_cast<char>(ci);
if (escape) {
if (b != be) {
*b = c;
