On Thu, Dec 15, 2016 at 12:49 PM, Gustavo Sverzut Barbieri <barbi...@gmail.com> wrote: > I really don't get what does this mean... are these volatile hiding > something else?
In case of setjmp or thread cancellable use, it seems that the compiler can generate code that could lead to some value being modified in one branch of the execution that would differ from the other branch. Marking it to be volatile force both branch to refetch the value from its common position on the stack and avoid having different unsynchronized data between each execution branch. The issue is that as the function become more and more complex, finding which branch is causing the warning become increasingly diffficult and resorting to volatile solve the problem in most case. > On Thu, Dec 15, 2016 at 5:39 PM, Cedric BAIL <cedric.b...@free.fr> wrote: >> cedric pushed a commit to branch master. >> >> http://git.enlightenment.org/core/efl.git/commit/?id=32da71d65d51e0bebfd0b00560e03451409cba02 >> >> commit 32da71d65d51e0bebfd0b00560e03451409cba02 >> Author: Cedric BAIL <ced...@osg.samsung.com> >> Date: Thu Dec 15 10:31:56 2016 -0800 >> >> ecore_con: reduce amount of warning related to clobbered variable. >> --- >> src/lib/ecore_con/ecore_con.c | 14 +++++++------- >> 1 file changed, 7 insertions(+), 7 deletions(-) >> >> diff --git a/src/lib/ecore_con/ecore_con.c b/src/lib/ecore_con/ecore_con.c >> index 7aaeb35..53a9bda 100644 >> --- a/src/lib/ecore_con/ecore_con.c >> +++ b/src/lib/ecore_con/ecore_con.c >> @@ -939,7 +939,7 @@ static Eina_Error >> _efl_net_ip_connect(const struct addrinfo *addr, SOCKET *sockfd) >> { >> SOCKET fd = INVALID_SOCKET; >> - Eina_Error ret = 0; >> + volatile Eina_Error ret = 0; >> >> /* always close-on-exec since it's not a point to pass an >> * under construction socket to a child process. >> @@ -985,7 +985,7 @@ _efl_net_ip_resolve_and_connect(const char *host, const >> char *port, int type, in >> .ai_family = AF_UNSPEC, >> .ai_flags = AI_ADDRCONFIG | AI_V4MAPPED, >> }; >> - Eina_Error ret = EFL_NET_DIALER_ERROR_COULDNT_CONNECT; >> + volatile Eina_Error ret = EFL_NET_DIALER_ERROR_COULDNT_CONNECT; >> int r; >> >> if (strchr(host, ':')) hints.ai_family = AF_INET6; >> @@ -1108,7 +1108,7 @@ >> _efl_net_ip_connect_async_run_socks4_try(Efl_Net_Ip_Connect_Async_Data *d, >> const >> socklen_t proxy_addrlen; >> SOCKET fd; >> Eina_Error err; >> - Eina_Bool ret = EINA_FALSE; >> + volatile Eina_Bool ret = EINA_FALSE; >> ssize_t s; >> >> err = _efl_net_ip_resolve_and_connect(proxy_host, proxy_port, >> SOCK_STREAM, IPPROTO_TCP, &fd, (struct sockaddr *)&proxy_addr, >> &proxy_addrlen); >> @@ -1565,7 +1565,7 @@ >> _efl_net_ip_connect_async_run_socks5_auth_user_pass(SOCKET fd, const char >> *user, >> uint8_t pass_len = pass ? strlen(pass) : 0; >> size_t len = 1 + 1 + user_len + 1 + pass_len; >> char *msg; >> - Eina_Bool ret = EINA_FALSE; >> + volatile Eina_Bool ret = EINA_FALSE; >> ssize_t s; >> >> msg = malloc(len); >> @@ -1630,7 +1630,7 @@ >> _efl_net_ip_connect_async_run_socks5_try(Efl_Net_Ip_Connect_Async_Data *d, >> const >> socklen_t proxy_addrlen; >> SOCKET fd; >> Eina_Error err; >> - Eina_Bool ret = EINA_FALSE; >> + volatile Eina_Bool ret = EINA_FALSE; >> ssize_t s; >> >> err = _efl_net_ip_resolve_and_connect(proxy_host, proxy_port, >> SOCK_STREAM, IPPROTO_TCP, &fd, (struct sockaddr *)&proxy_addr, >> &proxy_addrlen); >> @@ -2053,8 +2053,8 @@ _efl_net_ip_connect_async_run(void *data, Ecore_Thread >> *thread EINA_UNUSED) >> const char *host, *port, *proxy; >> char *addrcopy; >> char **proxies = NULL; >> - int proxies_idx = 0; >> - Eina_Bool is_libproxy = EINA_FALSE; >> + volatile int proxies_idx = 0; >> + volatile Eina_Bool is_libproxy = EINA_FALSE; >> >> addrcopy = strdup(d->address); >> if (!addrcopy) >> >> -- >> >> > > > > -- > Gustavo Sverzut Barbieri > -------------------------------------- > Mobile: +55 (16) 99354-9890 > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel -- Cedric BAIL ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
