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Fix release CMake build

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write() is declared with __attribute__ ((__warn_unused_result__)) and as
such we shall check its return value. Took opportunity and adjusted
error reporting a bit: if writing to stderr fails, try to write to
stdout.
This commit is contained in:
Eugene Shalygin 2017-05-03 01:31:02 +02:00 committed by sledgehammer999
parent a6cf386073
commit 943a837570
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GPG key ID: 6E4A2D025B7CC9A2
1 changed files with 21 additions and 6 deletions
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27
src/app/main.cpp
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@ -121,6 +121,10 @@ struct QBtCommandLineParameters
}
};
#if !defined Q_OS_WIN && !defined Q_OS_HAIKU
void reportToUser(const char* str);
#endif
void displayVersion();
void displayUsage(const QString &prg_name);
bool userAgreesWithLegalNotice();
@ -353,6 +357,17 @@ QBtCommandLineParameters parseCommandLine()
return result;
}
#if !defined Q_OS_WIN && !defined Q_OS_HAIKU
void reportToUser(const char* str)
{
const size_t strLen = strlen(str);
if (write(STDERR_FILENO, str, strLen) < static_cast<ssize_t>(strLen)) {
auto dummy = write(STDOUT_FILENO, str, strLen);
Q_UNUSED(dummy);
}
}
#endif
#if defined(Q_OS_UNIX) || defined(STACKTRACE_WIN)
void sigNormalHandler(int signum)
{
@ -360,9 +375,9 @@ void sigNormalHandler(int signum)
const char str1[] = "Catching signal: ";
const char *sigName = sysSigName[signum];
const char str2[] = "\nExiting cleanly\n";
write(STDERR_FILENO, str1, strlen(str1));
write(STDERR_FILENO, sigName, strlen(sigName));
write(STDERR_FILENO, str2, strlen(str2));
reportToUser(str1);
reportToUser(sigName);
reportToUser(str2);
#endif // !defined Q_OS_WIN && !defined Q_OS_HAIKU
signal(signum, SIG_DFL);
qApp->exit(); // unsafe, but exit anyway
@ -375,9 +390,9 @@ void sigAbnormalHandler(int signum)
const char *sigName = sysSigName[signum];
const char str2[] = "\nPlease file a bug report at http://bug.qbittorrent.org and provide the following information:\n\n"
"qBittorrent version: " QBT_VERSION "\n";
write(STDERR_FILENO, str1, strlen(str1));
write(STDERR_FILENO, sigName, strlen(sigName));
write(STDERR_FILENO, str2, strlen(str2));
reportToUser(str1);
reportToUser(sigName);
reportToUser(str2);
print_stacktrace(); // unsafe
#endif // !defined Q_OS_WIN && !defined Q_OS_HAIKU
#ifdef STACKTRACE_WIN