syslinux/0006-Replace-builtin-strlen-that-appears-to-get-optimized.patch
Troy Dawson 2698eb3378 RHEL 9.0.0 Alpha bootstrap
The content of this branch was automatically imported from Fedora ELN
with the following as its source:
https://src.fedoraproject.org/rpms/syslinux#135fd0fb0f3aa1c828d6a1cc11832a9ab354b04e
2020-10-15 10:13:19 -07:00

41 lines
1.1 KiB
Diff

From eae06bdce9468d7fde263de1c53f80f2faff0c9e Mon Sep 17 00:00:00 2001
From: Merlin Mathesius <mmathesi@redhat.com>
Date: Wed, 13 May 2020 11:58:37 -0500
Subject: [PATCH] Replace builtin strlen that appears to get optimized away
---
dos/string.h | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/dos/string.h b/dos/string.h
index f648de2d..407d0233 100644
--- a/dos/string.h
+++ b/dos/string.h
@@ -5,12 +5,22 @@
#ifndef _STRING_H
#define _STRING_H
+#include <stddef.h>
+
/* Standard routines */
#define memcpy(a,b,c) __builtin_memcpy(a,b,c)
#define memmove(a,b,c) __builtin_memmove(a,b,c)
#define memset(a,b,c) __builtin_memset(a,b,c)
#define strcpy(a,b) __builtin_strcpy(a,b)
-#define strlen(a) __builtin_strlen(a)
+#define strlen(a) inline_strlen(a)
+
+/* replacement for builtin strlen that appears to get optimized away */
+static inline size_t inline_strlen(const char *str)
+{
+ size_t l;
+ for (l = 0; *str++; l++);
+ return l;
+}
/* This only returns true or false */
static inline int memcmp(const void *__m1, const void *__m2, unsigned int __n)
--
2.25.1