scc

commit e2a52562d6ba87fc4b4a82a75ae9bb992e8153a1
parent e075a0228c63e8bed0a848713569a3b8fe52012c
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Wed, 11 Jan 2017 16:16:15 +0100

[cc1] Fix continuation after macro expansion

When a macro is expanded a new push up buffer is created,
but after returning from the macro expansion the original
buffer can still have pending characters.

Diffstat:
M
cc1/lex.c
 | 
7
++++++-

1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/cc1/lex.c b/cc1/lex.c
@@ -207,10 +207,15 @@ readline(void)
 	char c, peekc = 0;
 
 repeat_from_file:
-	input->begin = input->p = input->line;
 	*input->line = '\0';
+	input->p = input->line;
 
 repeat_from_expand:
+	input->begin = input->p;
+
+	if (*input->begin)
+		return 1;
+
 	if (eof)
 		return 0;