Hello.
As reported here https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78970#c7,
we should not report error when one want to pre-compile a {c,c++}-header file.
Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
Ready to be installed?
Martin
>From bf226badedf38c81d09e34bde6ce0ff694e5b4fd Mon Sep 17 00:00:00 2001
From: marxin <mli...@suse.cz>
Date: Mon, 9 Jan 2017 14:20:41 +0100
Subject: [PATCH] Do not error when -E provided (PR pch/78970).
gcc/ChangeLog:
2017-01-09 Martin Liska <mli...@suse.cz>
PR pch/78970
* gcc.c (driver_handle_option): Handle OPT_E and set
have_E.
(lookup_compiler): Do not show error message with have_E.
---
gcc/gcc.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 1d2ed99ef5f..b9cdc5d81a8 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -1931,6 +1931,9 @@ static int have_c = 0;
/* Was the option -o passed. */
static int have_o = 0;
+/* Were the option -E passed. */
+static int have_E = 0;
+
/* Pointer to output file name passed in with -o. */
static const char *output_file = 0;
@@ -4067,6 +4070,10 @@ driver_handle_option (struct gcc_options *opts,
validated = true;
break;
+ case OPT_E:
+ have_E = true;
+ break;
+
case OPT_x:
spec_lang = arg;
if (!strcmp (spec_lang, "none"))
@@ -8328,7 +8335,8 @@ lookup_compiler (const char *name, size_t length, const char *language)
{
if (name != NULL && strcmp (name, "-") == 0
&& (strcmp (cp->suffix, "@c-header") == 0
- || strcmp (cp->suffix, "@c++-header") == 0))
+ || strcmp (cp->suffix, "@c++-header") == 0)
+ && !have_E)
fatal_error (input_location,
"cannot use %<-%> as input filename for a "
"precompiled header");
--
2.11.0
