`-fobjc-arc-exceptions` compiler flag does not have an effect in Xcode for iOS app
I am trying to disable the exceptions in the compiler in Xcode 10.1 using -fobjc-arc-exceptions, but for some reason it does not take effect. My expectation is that the app won't stop running after throwing an exception. E.g.:
@try {
[NSException raise:@"Testing" format:@"details: %@", self];
} @catch (NSException *exception) {
// do some stuff
} @finally {
// do some final stuff and continue as usual
}
Based on http://clang.llvm.org/docs/AutomaticReferenceCounting.html#exceptions , A program may be compiled with the option -fobjc-arc-exceptions in order to enable these, or with the option -fno-objc-arc-exceptions to explicitly disable them, with the last such argument “winning”.
So I tried putting in Build Phases > Compiler Sources > all files, or Build Settings > Other C Flags, or Other Linker Flags..
My question is how to properly set this flag, and if my expectation is correct?
I do understand that exceptions should not be recovered from.
ios xcode clang llvm llvm-clang
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
add a comment |
I am trying to disable the exceptions in the compiler in Xcode 10.1 using -fobjc-arc-exceptions, but for some reason it does not take effect. My expectation is that the app won't stop running after throwing an exception. E.g.:
@try {
[NSException raise:@"Testing" format:@"details: %@", self];
} @catch (NSException *exception) {
// do some stuff
} @finally {
// do some final stuff and continue as usual
}
Based on http://clang.llvm.org/docs/AutomaticReferenceCounting.html#exceptions , A program may be compiled with the option -fobjc-arc-exceptions in order to enable these, or with the option -fno-objc-arc-exceptions to explicitly disable them, with the last such argument “winning”.
So I tried putting in Build Phases > Compiler Sources > all files, or Build Settings > Other C Flags, or Other Linker Flags..
My question is how to properly set this flag, and if my expectation is correct?
I do understand that exceptions should not be recovered from.
ios xcode clang llvm llvm-clang
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
Thearcin the flag name means that it turns off ARC-related exceptions. It doesn't turn off other exception support. (And if there were an option to turn off all support, it would also turn of the ability to parse[NSException raise:…, and your app wouldn't compile at all.)
– arnt
Nov 19 '18 at 13:56
thanks @arnt. so there is no way to let the app continue if it encounters aNSInternalInconsistencyExceptionfor example?
– Zsolt
Nov 19 '18 at 14:12
@arnt any comment on this? nerdyc.com/blog/2013/04/06/arc-doesnt-clean-up-after-exception
– Zsolt
Nov 19 '18 at 14:21
add a comment |
I am trying to disable the exceptions in the compiler in Xcode 10.1 using -fobjc-arc-exceptions, but for some reason it does not take effect. My expectation is that the app won't stop running after throwing an exception. E.g.:
@try {
[NSException raise:@"Testing" format:@"details: %@", self];
} @catch (NSException *exception) {
// do some stuff
} @finally {
// do some final stuff and continue as usual
}
Based on http://clang.llvm.org/docs/AutomaticReferenceCounting.html#exceptions , A program may be compiled with the option -fobjc-arc-exceptions in order to enable these, or with the option -fno-objc-arc-exceptions to explicitly disable them, with the last such argument “winning”.
So I tried putting in Build Phases > Compiler Sources > all files, or Build Settings > Other C Flags, or Other Linker Flags..
My question is how to properly set this flag, and if my expectation is correct?
I do understand that exceptions should not be recovered from.
ios xcode clang llvm llvm-clang
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
I am trying to disable the exceptions in the compiler in Xcode 10.1 using -fobjc-arc-exceptions, but for some reason it does not take effect. My expectation is that the app won't stop running after throwing an exception. E.g.:
@try {
[NSException raise:@"Testing" format:@"details: %@", self];
} @catch (NSException *exception) {
// do some stuff
} @finally {
// do some final stuff and continue as usual
}
Based on http://clang.llvm.org/docs/AutomaticReferenceCounting.html#exceptions , A program may be compiled with the option -fobjc-arc-exceptions in order to enable these, or with the option -fno-objc-arc-exceptions to explicitly disable them, with the last such argument “winning”.
So I tried putting in Build Phases > Compiler Sources > all files, or Build Settings > Other C Flags, or Other Linker Flags..
My question is how to properly set this flag, and if my expectation is correct?
I do understand that exceptions should not be recovered from.
ios xcode clang llvm llvm-clang
ios xcode clang llvm llvm-clang
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
edited Nov 20 '18 at 1:41
Cœur
18.1k9108148
18.1k9108148
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
asked Nov 19 '18 at 12:47
ZsoltZsolt
2,12732443
2,12732443
Thearcin the flag name means that it turns off ARC-related exceptions. It doesn't turn off other exception support. (And if there were an option to turn off all support, it would also turn of the ability to parse[NSException raise:…, and your app wouldn't compile at all.)
– arnt
Nov 19 '18 at 13:56
thanks @arnt. so there is no way to let the app continue if it encounters aNSInternalInconsistencyExceptionfor example?
– Zsolt
Nov 19 '18 at 14:12
@arnt any comment on this? nerdyc.com/blog/2013/04/06/arc-doesnt-clean-up-after-exception
– Zsolt
Nov 19 '18 at 14:21
add a comment |
Thearcin the flag name means that it turns off ARC-related exceptions. It doesn't turn off other exception support. (And if there were an option to turn off all support, it would also turn of the ability to parse[NSException raise:…, and your app wouldn't compile at all.)
– arnt
Nov 19 '18 at 13:56
thanks @arnt. so there is no way to let the app continue if it encounters aNSInternalInconsistencyExceptionfor example?
– Zsolt
Nov 19 '18 at 14:12
@arnt any comment on this? nerdyc.com/blog/2013/04/06/arc-doesnt-clean-up-after-exception
– Zsolt
Nov 19 '18 at 14:21
The
arc in the flag name means that it turns off ARC-related exceptions. It doesn't turn off other exception support. (And if there were an option to turn off all support, it would also turn of the ability to parse [NSException raise:…, and your app wouldn't compile at all.)– arnt
Nov 19 '18 at 13:56
The
arc in the flag name means that it turns off ARC-related exceptions. It doesn't turn off other exception support. (And if there were an option to turn off all support, it would also turn of the ability to parse [NSException raise:…, and your app wouldn't compile at all.)– arnt
Nov 19 '18 at 13:56
thanks @arnt. so there is no way to let the app continue if it encounters a
NSInternalInconsistencyException for example?– Zsolt
Nov 19 '18 at 14:12
thanks @arnt. so there is no way to let the app continue if it encounters a
NSInternalInconsistencyException for example?– Zsolt
Nov 19 '18 at 14:12
@arnt any comment on this? nerdyc.com/blog/2013/04/06/arc-doesnt-clean-up-after-exception
– Zsolt
Nov 19 '18 at 14:21
@arnt any comment on this? nerdyc.com/blog/2013/04/06/arc-doesnt-clean-up-after-exception
– Zsolt
Nov 19 '18 at 14:21
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53374978%2ffobjc-arc-exceptions-compiler-flag-does-not-have-an-effect-in-xcode-for-ios-a%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53374978%2ffobjc-arc-exceptions-compiler-flag-does-not-have-an-effect-in-xcode-for-ios-a%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
The
arcin the flag name means that it turns off ARC-related exceptions. It doesn't turn off other exception support. (And if there were an option to turn off all support, it would also turn of the ability to parse[NSException raise:…, and your app wouldn't compile at all.)– arnt
Nov 19 '18 at 13:56
thanks @arnt. so there is no way to let the app continue if it encounters a
NSInternalInconsistencyExceptionfor example?– Zsolt
Nov 19 '18 at 14:12
@arnt any comment on this? nerdyc.com/blog/2013/04/06/arc-doesnt-clean-up-after-exception
– Zsolt
Nov 19 '18 at 14:21