Capture preprocessor-output lines and EOLs

src/parser/parser.l

@@ -6,6 +6,8 @@
 #include "parser.h"
 #include "parser.tab.h"
 
+#define YY_USER_ACTION yylloc->first_column += yyleng;
+
 %}
 
 %x str
@@ -114,4 +116,13 @@ sizeof              return TOK_SIZEOF;
 
 [a-zA-Z_][a-zA-Z_0-9]*              return TOK_IDENTIFIER;
 
+^[ ]*#[ ]+[0-9]+[ ]+\".+\".*$ {
+}
+\n {
+    yylloc->first_line++;
+    yylloc->first_column = 0;
+    yylloc->last_line++;
+    yylloc->last_column = 0;
+}
+
 %%