Remove Linux-specific libc stuff.

src/main.c

@@ -1,5 +1,3 @@
-#define _GNU_SOURCE // Makes getline() available in GCC.
-
 #include <stdarg.h>
 #include <stdbool.h>
 #include <stdio.h>
@@ -8,6 +6,8 @@
 
 #include "wren.h"
 
+#define MAX_LINE_LENGTH 1024 // TODO: Something less arbitrary.
+
 // This is the source file for the standalone command line interpreter. It is
 // not needed if you are embedding Wren in an application.
 
@@ -75,38 +75,24 @@ static int runRepl(WrenVM* vm)
   printf("\\\\/\"-\n");
   printf(" \\_/   wren v0.0.0\n");
 
+  char line[MAX_LINE_LENGTH];
+
   for (;;)
   {
     printf("> ");
 
-    char* line = NULL;
-    size_t size = 0;
-    ssize_t numRead = getline(&line, &size, stdin);
+    if (fgets(line, MAX_LINE_LENGTH, stdin))
+    {
+      // TODO: Handle failure.
+      wrenInterpret(vm, "Prompt", line);
 
-    // If stdin was closed (usually meaning the user entered Ctrl-D), exit.
-    if (numRead == -1 || feof(stdin))
+      // TODO: Automatically print the result of expressions.
+    }
+    else
     {
       printf("\n");
       return 0;
     }
-
-    // TODO: Handle failure.
-    wrenInterpret(vm, "Prompt", line);
-
-    free(line);
-
-    // TODO: Figure out how this should work with wren API.
-    /*
-    ObjFn* fn = compile(vm, line);
-
-    if (fn != NULL)
-    {
-      Value result = interpret(vm, fn);
-      printf("= ");
-      printValue(result);
-      printf("\n");
-    }
-    */
   }
 
   wrenFreeVM(vm);

src/wren_vm.c

@@ -1007,7 +1007,7 @@ static bool runInterpreter(WrenVM* vm)
       if (superclass->numFields + numFields > MAX_FIELDS)
       {
         char message[70 + MAX_VARIABLE_NAME];
-        snprintf(message, 70 + MAX_VARIABLE_NAME,
+        sprintf(message,
             "Class '%s' may not have more than %d fields, including inherited "
             "ones.", name->value, MAX_FIELDS);