From 21a680050fb52ee9a91716b5fe8aca4ca96e16e5 Mon Sep 17 00:00:00 2001 From: Arnaud Giersch Date: Tue, 24 Oct 2017 15:13:17 +0200 Subject: [PATCH 1/1] Fix maps_name (missing /) in resolveBacktrace. --- src/xbt/backtrace_linux.cpp | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/xbt/backtrace_linux.cpp b/src/xbt/backtrace_linux.cpp index 5b23cb1974..7cde5e37c2 100644 --- a/src/xbt/backtrace_linux.cpp +++ b/src/xbt/backtrace_linux.cpp @@ -6,6 +6,8 @@ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ +#include +#include #include #include #include @@ -221,9 +223,12 @@ std::vector resolveBacktrace( int found = 0; /* let's look for the offset of this library in our addressing space */ - std::string maps_name = std::string("/proc/") + std::to_string(getpid()) + "maps"; + std::string maps_name = std::string("/proc/") + std::to_string(getpid()) + "/maps"; FILE* maps = fopen(maps_name.c_str(), "r"); - + if (maps == nullptr) { + XBT_CRITICAL("fopen(\"%s\") failed: %s", maps_name.c_str(), strerror(errno)); + continue; + } unsigned long int addr = strtoul(addrs[i].c_str(), &p, 16); if (*p != '\0') { XBT_CRITICAL("Cannot parse backtrace address '%s' (addr=%#lx)", addrs[i].c_str(), addr); -- 2.20.1