Please apply this patch. libev-using programs are otherwise undebuggagble wih valgrind on i386.
-- -- Matthias Urlichs
From: Matthias Urlichs <matth...@urlichs.de>
Date: Tue, 14 Mar 2017 01:44:51 +0100
X-Dgit-Generated: 1:4.22-2 9775ccac9c1ba148676b5b97658b4728647aab16
Subject: Don't use -1(%esp). It upsets valgrind and violates the i386 ABI.
Unfortunately, the author of libev refuses to fix this.
---
--- libev-4.22.orig/ev.c
+++ libev-4.22/ev.c
@@ -656,8 +656,8 @@ struct signalfd_siginfo
#ifndef ECB_MEMORY_FENCE
#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
#if __i386 || __i386__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
- #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, 0(%%esp)" : : : "memory")
+ #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
#elif ECB_GCC_AMD64
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
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