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gcc: add upstream patch to fix build of GCC6 with GCC7

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Building host-gcc-initial with GCC7 on the host fails due to the
comparison of a pointer to an integer in ubsan_use_new_style_p, which
is forbidden by ISO C++:

ubsan.c:1474:23: error: ISO C++ forbids comparison between pointer and
integer [-fpermissive]
       || xloc.file == '\0' || xloc.file[0] == '\xff'

Backported from:
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=239971

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit 2d57ad29b1)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Jörg Krause 2017-06-01 09:37:58 +02:00 committed by Peter Korsgaard
parent 883e4c2ceb
commit bc00cd601b
1 changed files with 40 additions and 0 deletions
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40
package/gcc/6.3.0/942-ubsan-fix-check-empty-string.patch Normal file
View File

@ -0,0 +1,40 @@
From 8db2cf6353c13f2a84cbe49b689654897906c499 Mon Sep 17 00:00:00 2001
From: kyukhin <kyukhin@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 3 Sep 2016 10:57:05 +0000
Subject: [PATCH] gcc/ubsan.c: Fix check for empty string
Building host-gcc-initial with GCC7 on the host fails due to the
comparison of a pointer to an integer in ubsan_use_new_style_p, which
is forbidden by ISO C++:
ubsan.c:1474:23: error: ISO C++ forbids comparison between pointer and
integer [-fpermissive]
|| xloc.file == '\0' || xloc.file[0] == '\xff'
Backport the fix from upstream GCC to enable the build with GCC 7.
Backported from:
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=239971
Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
[Add commit log from [1]]
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
[1] https://patchwork.openembedded.org/patch/138884/
---
gcc/ubsan.c | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
Index: gcc-6.3.0/gcc/ubsan.c
===================================================================
--- gcc-6.3.0.orig/gcc/ubsan.c
+++ gcc-6.3.0/gcc/ubsan.c
@@ -1471,7 +1471,7 @@ ubsan_use_new_style_p (location_t loc)
expanded_location xloc = expand_location (loc);
if (xloc.file == NULL || strncmp (xloc.file, "\1", 2) == 0
- || xloc.file == '\0' || xloc.file[0] == '\xff'
+ || xloc.file[0] == '\0' || xloc.file[0] == '\xff'
|| xloc.file[1] == '\xff')
return false;