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Don't fail silently in VersionInfo(), print useful message

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Having version.hpp throw an exception when built against a malformed
version number (due to, eg, not having the git tag available in an
automated package build from source bundle) results in _init_ failing
during an otherwise apparently successful dlopen(), as well as the
netgen-mesher executable crashing before hitting main().

This patch both forces an abort and prints a helpful message alerting
the builder/user that something went wrong instead of handing over
either a coredump or a weirdly malfunctioning library with no apparent
cause.  Hopefully this will avoid a repeat of automated Fedora builds
shipping nonfunctional Netgen RPMs for several years!
This commit is contained in:
Monty Montgomery 2022-05-14 23:37:22 -04:00
parent e8ec2b3550
commit e9eae568ff
1 changed files with 40 additions and 32 deletions
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10
libsrc/core/version.hpp
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@ -1,9 +1,10 @@
#ifndef NETGEN_CORE_VERSION_HPP #ifndef NETGEN_CORE_VERSION_HPP
#define NETGEN_CORE_VERSION_HPP #define NETGEN_CORE_VERSION_HPP
#include <ostream> #include <iostream>
#include <string> #include <string>
#include <tuple> #include <tuple>
#include "exception.hpp"
#include "ngcore_api.hpp" #include "ngcore_api.hpp"
@ -18,6 +19,8 @@ namespace ngcore
VersionInfo() = default; VersionInfo() = default;
VersionInfo(std::string vstring) VersionInfo(std::string vstring)
{ {
std::string save = vstring;
try {
minor_ = release = patch = 0; minor_ = release = patch = 0;
git_hash = ""; git_hash = "";
if(vstring.substr(0,1) == "v") if(vstring.substr(0,1) == "v")
@ -49,6 +52,11 @@ namespace ngcore
} }
} }
} }
} catch(...) {
std::cerr << "Malformed NETGEN_VERSION (" << save <<"\n";
std::cerr << "Micompiled/mispackaged Netgen library\n";
abort();
}
} }
VersionInfo(const char* cstr) : VersionInfo(std::string(cstr)) { } VersionInfo(const char* cstr) : VersionInfo(std::string(cstr)) { }