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Silence some warnings on GCC 4.9

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This commit is contained in:
Eelco Dolstra 2014-12-12 17:14:28 +01:00
parent 46f3eb6fdd
commit b77037b8fd
4 changed files with 12 additions and 7 deletions
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2
src/libmain/stack.cc
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@ -32,7 +32,7 @@ static void sigsegvHandler(int signo, siginfo_t * info, void * ctx)
if (diff < 0) diff = -diff;
if (diff < 4096) {
char msg[] = "error: stack overflow (possible infinite recursion)\n";
write(2, msg, strlen(msg));
(void) write(2, msg, strlen(msg));
_exit(1); // maybe abort instead?
}
}

6
src/libstore/build.cc
View file

@ -1976,9 +1976,11 @@ void DerivationGoal::runChild()
/* Set the hostname etc. to fixed values. */
char hostname[] = "localhost";
sethostname(hostname, sizeof(hostname));
if (sethostname(hostname, sizeof(hostname)) == -1)
throw SysError("cannot set host name");
char domainname[] = "(none)"; // kernel default
setdomainname(domainname, sizeof(domainname));
if (setdomainname(domainname, sizeof(domainname)) == -1)
throw SysError("cannot set domain name");
/* Make all filesystems private. This is necessary
because subtrees may have been mounted as "shared"

2
src/libstore/remote-store.cc
View file

@ -109,7 +109,7 @@ void RemoteStore::connectToDaemon()
applications... */
AutoCloseFD fdPrevDir = open(".", O_RDONLY);
if (fdPrevDir == -1) throw SysError("couldn't open current directory");
chdir(dirOf(socketPath).c_str());
if (chdir(dirOf(socketPath).c_str()) == -1) throw SysError("couldn't change current directory");
Path socketPathRel = "./" + baseNameOf(socketPath);
struct sockaddr_un addr;

9
src/nix-daemon/nix-daemon.cc
View file

@ -698,7 +698,8 @@ static PeerInfo getPeerInfo(int remote)
static void daemonLoop(char * * argv)
{
chdir("/");
if (chdir("/") == -1)
throw SysError("cannot change current directory");
/* Get rid of children automatically; don't let them become
zombies. */
@ -728,7 +729,8 @@ static void daemonLoop(char * * argv)
/* Urgh, sockaddr_un allows path names of only 108 characters.
So chdir to the socket directory so that we can pass a
relative path name. */
chdir(dirOf(socketPath).c_str());
if (chdir(dirOf(socketPath).c_str()) == -1)
throw SysError("cannot change current directory");
Path socketPathRel = "./" + baseNameOf(socketPath);
struct sockaddr_un addr;
@ -748,7 +750,8 @@ static void daemonLoop(char * * argv)
if (res == -1)
throw SysError(format("cannot bind to socket ‘%1%’") % socketPath);
chdir("/"); /* back to the root */
if (chdir("/") == -1) /* back to the root */
throw SysError("cannot change current directory");
if (listen(fdSocket, 5) == -1)
throw SysError(format("cannot listen on socket ‘%1%’") % socketPath);