Conditional jump or move depends on uninitialized value(s) when checking with if condition
int t_parse(char* target, FILE* fp)
{
char cuts = ':';
char * tok;
char ln[BUFF_SIZE];
if (lnCnt == 0)
{
lnCnt = 1;
}
while (!feof(fp))
{
int i = 0;
int hop = 1;
char c;
while (hop)
{
c = fgetc(fp);
if (feof(fp))
{
if (i == 0)
{
return 0;
}
ln[i] = '';
hop = 0;
}
else if (c == 'n')
{
ln[i] = '';
hop = 0;
}
else if (i == BUFF_SIZE)
{
fprintf(stderr, "%i: Error of long linen", lnCnt);
exit(1);
}
if (hop)
{
ln[i] = c;
}
i++;
}
if (ln[0] != '#' && ln[0] != 't' && ln[0] != '')
{
tok = strtok(ln, &cuts);
if (tok == NULL)
{
fprintf(stderr, "%d: Error of invalid targetn", lnCnt);
exit(1);
}
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
}
return lnCnt++;
}
}
lnCnt++;
}
return 0;
}
After running Valgrind Conditional jump or move depends on uninitialized value(s)
==2469== at 0x10938F: t_parse (text_parsing.c:81)
Which is
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
line 81 is if (target[j] == ' ')
I am check here so I am not sure why is there a memory leak?
i ran the command valgrind --leak-check=yes --track-origins=yes --read-var-info=yes 537make
c valgrind
asked Nov 13 at 0:31
Ray
31
add a comment |
int t_parse(char* target, FILE* fp)
{
char cuts = ':';
char * tok;
char ln[BUFF_SIZE];
if (lnCnt == 0)
{
lnCnt = 1;
}
while (!feof(fp))
{
int i = 0;
int hop = 1;
char c;
while (hop)
{
c = fgetc(fp);
if (feof(fp))
{
if (i == 0)
{
return 0;
}
ln[i] = '';
hop = 0;
}
else if (c == 'n')
{
ln[i] = '';
hop = 0;
}
else if (i == BUFF_SIZE)
{
fprintf(stderr, "%i: Error of long linen", lnCnt);
exit(1);
}
if (hop)
{
ln[i] = c;
}
i++;
}
if (ln[0] != '#' && ln[0] != 't' && ln[0] != '')
{
tok = strtok(ln, &cuts);
if (tok == NULL)
{
fprintf(stderr, "%d: Error of invalid targetn", lnCnt);
exit(1);
}
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
}
return lnCnt++;
}
}
lnCnt++;
}
return 0;
}
After running Valgrind Conditional jump or move depends on uninitialized value(s)
==2469== at 0x10938F: t_parse (text_parsing.c:81)
Which is
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
line 81 is if (target[j] == ' ')
I am check here so I am not sure why is there a memory leak?
i ran the command valgrind --leak-check=yes --track-origins=yes --read-var-info=yes 537make
c valgrind
asked Nov 13 at 0:31
Ray
31
add a comment |
int t_parse(char* target, FILE* fp)
{
char cuts = ':';
char * tok;
char ln[BUFF_SIZE];
if (lnCnt == 0)
{
lnCnt = 1;
}
while (!feof(fp))
{
int i = 0;
int hop = 1;
char c;
while (hop)
{
c = fgetc(fp);
if (feof(fp))
{
if (i == 0)
{
return 0;
}
ln[i] = '';
hop = 0;
}
else if (c == 'n')
{
ln[i] = '';
hop = 0;
}
else if (i == BUFF_SIZE)
{
fprintf(stderr, "%i: Error of long linen", lnCnt);
exit(1);
}
if (hop)
{
ln[i] = c;
}
i++;
}
if (ln[0] != '#' && ln[0] != 't' && ln[0] != '')
{
tok = strtok(ln, &cuts);
if (tok == NULL)
{
fprintf(stderr, "%d: Error of invalid targetn", lnCnt);
exit(1);
}
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
}
return lnCnt++;
}
}
lnCnt++;
}
return 0;
}
After running Valgrind Conditional jump or move depends on uninitialized value(s)
==2469== at 0x10938F: t_parse (text_parsing.c:81)
Which is
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
line 81 is if (target[j] == ' ')
I am check here so I am not sure why is there a memory leak?
i ran the command valgrind --leak-check=yes --track-origins=yes --read-var-info=yes 537make
c valgrind
asked Nov 13 at 0:31
Ray
31
int t_parse(char* target, FILE* fp)
{
char cuts = ':';
char * tok;
char ln[BUFF_SIZE];
if (lnCnt == 0)
{
lnCnt = 1;
}
while (!feof(fp))
{
int i = 0;
int hop = 1;
char c;
while (hop)
{
c = fgetc(fp);
if (feof(fp))
{
if (i == 0)
{
return 0;
}
ln[i] = '';
hop = 0;
}
else if (c == 'n')
{
ln[i] = '';
hop = 0;
}
else if (i == BUFF_SIZE)
{
fprintf(stderr, "%i: Error of long linen", lnCnt);
exit(1);
}
if (hop)
{
ln[i] = c;
}
i++;
}
if (ln[0] != '#' && ln[0] != 't' && ln[0] != '')
{
tok = strtok(ln, &cuts);
if (tok == NULL)
{
fprintf(stderr, "%d: Error of invalid targetn", lnCnt);
exit(1);
}
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
}
return lnCnt++;
}
}
lnCnt++;
}
return 0;
}
After running Valgrind Conditional jump or move depends on uninitialized value(s)
==2469== at 0x10938F: t_parse (text_parsing.c:81)
Which is
else
{
strcpy(target, tok);
for (int j = 0; j < BUFF_SIZE; j++)
{
if (target[j] == ' ')
{
target[j] = '';
return lnCnt++;
}
line 81 is if (target[j] == ' ')
I am check here so I am not sure why is there a memory leak?
i ran the command valgrind --leak-check=yes --track-origins=yes --read-var-info=yes 537make
c valgrind
c valgrind
asked Nov 13 at 0:31
Ray
31
asked Nov 13 at 0:31
Ray
31
asked Nov 13 at 0:31
Ray
31
asked Nov 13 at 0:31
Ray
31
asked Nov 13 at 0:31
Ray
31
31
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
tok is string copied into target. It will be terminated with a '' character.
Then you are looping through the characters in target, and will terminate on a matching space character. However, you are moving beyond the end of the string in target in the case when no space character is found, which is uninitialised and could contain anything--so valgrind warns you of this.
One other issue: char *strtok(char *str, const char *delim); In this, delim points to a string of delimiters, not a single character. So char cuts = ':'; should be char *cuts = ":";
answered Nov 13 at 0:45
Rob Newton
37028
How do you suggest I fix it? I tried to initialize target bu using a for loop. ............... for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); }................... I tried target = & char var. ......... No luck
– Ray
Nov 13 at 1:52
You cannot say: target[j] == 'a'; == is the equality operator. You need the assignment operator =
– Rob Newton
Nov 13 at 1:55
Sorry, my bad. Tried .... for (int j = 0; j < BUFF_SIZE; j++) { target[j] = 'a'; }..... Still same error
– Ray
Nov 13 at 2:05
I am surprised you would get that same exact valgrind warning after initialising the buffer, unless you are copying in unitialised data from the strcpy() further up; yes, that may be the problem? Also refer to my edited answer.
– Rob Newton
Nov 13 at 2:21
after the strcpy(), it would be interesting to printf() target, to see if it is ok according to valgrind
– Rob Newton
Nov 13 at 2:27
add a comment |
valgrind is not saying anything about a leak. It is showing off another of its features. It has detected that you are testing the content of memory that you did not initialize. It means that target contains undefined data. If you want more detailed answer you have to show how you set up target
answered Nov 13 at 0:36
pm100
25k1557104
i declared int t_parse(char* target, FILE* fp) and then i strcpy(target, tok); I have not used target anywhere else
– Ray
Nov 13 at 0:50
you need to show where you set it up in the code that calls t_parse, you passed it in as the first parameter
– pm100
Nov 13 at 0:56
1
the probable cause is that you are looping for BUF_SIZE bytes, you should probably be only looping tillstrlen(target)
– pm100
Nov 13 at 0:58
I have tried initializing target to a char. I have tried for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); } at the beginning of the function. Still dosent work. I tried changing the for loop at line 80 to strlen(target). No luck
– Ray
Nov 13 at 1:48
add a comment |
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%2f53272088%2fconditional-jump-or-move-depends-on-uninitialized-values-when-checking-with-if%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
tok is string copied into target. It will be terminated with a '' character.
Then you are looping through the characters in target, and will terminate on a matching space character. However, you are moving beyond the end of the string in target in the case when no space character is found, which is uninitialised and could contain anything--so valgrind warns you of this.
One other issue: char *strtok(char *str, const char *delim); In this, delim points to a string of delimiters, not a single character. So char cuts = ':'; should be char *cuts = ":";
answered Nov 13 at 0:45
Rob Newton
37028
How do you suggest I fix it? I tried to initialize target bu using a for loop. ............... for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); }................... I tried target = & char var. ......... No luck
– Ray
Nov 13 at 1:52
You cannot say: target[j] == 'a'; == is the equality operator. You need the assignment operator =
– Rob Newton
Nov 13 at 1:55
Sorry, my bad. Tried .... for (int j = 0; j < BUFF_SIZE; j++) { target[j] = 'a'; }..... Still same error
– Ray
Nov 13 at 2:05
I am surprised you would get that same exact valgrind warning after initialising the buffer, unless you are copying in unitialised data from the strcpy() further up; yes, that may be the problem? Also refer to my edited answer.
– Rob Newton
Nov 13 at 2:21
after the strcpy(), it would be interesting to printf() target, to see if it is ok according to valgrind
– Rob Newton
Nov 13 at 2:27
add a comment |
tok is string copied into target. It will be terminated with a '' character.
Then you are looping through the characters in target, and will terminate on a matching space character. However, you are moving beyond the end of the string in target in the case when no space character is found, which is uninitialised and could contain anything--so valgrind warns you of this.
One other issue: char *strtok(char *str, const char *delim); In this, delim points to a string of delimiters, not a single character. So char cuts = ':'; should be char *cuts = ":";
answered Nov 13 at 0:45
Rob Newton
37028
How do you suggest I fix it? I tried to initialize target bu using a for loop. ............... for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); }................... I tried target = & char var. ......... No luck
– Ray
Nov 13 at 1:52
You cannot say: target[j] == 'a'; == is the equality operator. You need the assignment operator =
– Rob Newton
Nov 13 at 1:55
Sorry, my bad. Tried .... for (int j = 0; j < BUFF_SIZE; j++) { target[j] = 'a'; }..... Still same error
– Ray
Nov 13 at 2:05
I am surprised you would get that same exact valgrind warning after initialising the buffer, unless you are copying in unitialised data from the strcpy() further up; yes, that may be the problem? Also refer to my edited answer.
– Rob Newton
Nov 13 at 2:21
after the strcpy(), it would be interesting to printf() target, to see if it is ok according to valgrind
– Rob Newton
Nov 13 at 2:27
add a comment |
tok is string copied into target. It will be terminated with a '' character.
Then you are looping through the characters in target, and will terminate on a matching space character. However, you are moving beyond the end of the string in target in the case when no space character is found, which is uninitialised and could contain anything--so valgrind warns you of this.
One other issue: char *strtok(char *str, const char *delim); In this, delim points to a string of delimiters, not a single character. So char cuts = ':'; should be char *cuts = ":";
answered Nov 13 at 0:45
Rob Newton
37028
tok is string copied into target. It will be terminated with a '' character.
Then you are looping through the characters in target, and will terminate on a matching space character. However, you are moving beyond the end of the string in target in the case when no space character is found, which is uninitialised and could contain anything--so valgrind warns you of this.
One other issue: char *strtok(char *str, const char *delim); In this, delim points to a string of delimiters, not a single character. So char cuts = ':'; should be char *cuts = ":";
answered Nov 13 at 0:45
Rob Newton
37028
edited Nov 13 at 2:19
answered Nov 13 at 0:45
Rob Newton
37028
answered Nov 13 at 0:45
Rob Newton
37028
answered Nov 13 at 0:45
Rob Newton
37028
37028
How do you suggest I fix it? I tried to initialize target bu using a for loop. ............... for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); }................... I tried target = & char var. ......... No luck
– Ray
Nov 13 at 1:52
You cannot say: target[j] == 'a'; == is the equality operator. You need the assignment operator =
– Rob Newton
Nov 13 at 1:55
Sorry, my bad. Tried .... for (int j = 0; j < BUFF_SIZE; j++) { target[j] = 'a'; }..... Still same error
– Ray
Nov 13 at 2:05
I am surprised you would get that same exact valgrind warning after initialising the buffer, unless you are copying in unitialised data from the strcpy() further up; yes, that may be the problem? Also refer to my edited answer.
– Rob Newton
Nov 13 at 2:21
after the strcpy(), it would be interesting to printf() target, to see if it is ok according to valgrind
– Rob Newton
Nov 13 at 2:27
add a comment |
How do you suggest I fix it? I tried to initialize target bu using a for loop. ............... for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); }................... I tried target = & char var. ......... No luck
– Ray
Nov 13 at 1:52
You cannot say: target[j] == 'a'; == is the equality operator. You need the assignment operator =
– Rob Newton
Nov 13 at 1:55
Sorry, my bad. Tried .... for (int j = 0; j < BUFF_SIZE; j++) { target[j] = 'a'; }..... Still same error
– Ray
Nov 13 at 2:05
I am surprised you would get that same exact valgrind warning after initialising the buffer, unless you are copying in unitialised data from the strcpy() further up; yes, that may be the problem? Also refer to my edited answer.
– Rob Newton
Nov 13 at 2:21
after the strcpy(), it would be interesting to printf() target, to see if it is ok according to valgrind
– Rob Newton
Nov 13 at 2:27
How do you suggest I fix it? I tried to initialize target bu using a for loop. ............... for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); }................... I tried target = & char var. ......... No luck
– Ray
Nov 13 at 1:52
How do you suggest I fix it? I tried to initialize target bu using a for loop. ............... for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); }................... I tried target = & char var. ......... No luck
– Ray
Nov 13 at 1:52
You cannot say: target[j] == 'a'; == is the equality operator. You need the assignment operator =
– Rob Newton
Nov 13 at 1:55
You cannot say: target[j] == 'a'; == is the equality operator. You need the assignment operator =
– Rob Newton
Nov 13 at 1:55
Sorry, my bad. Tried .... for (int j = 0; j < BUFF_SIZE; j++) { target[j] = 'a'; }..... Still same error
– Ray
Nov 13 at 2:05
Sorry, my bad. Tried .... for (int j = 0; j < BUFF_SIZE; j++) { target[j] = 'a'; }..... Still same error
– Ray
Nov 13 at 2:05
I am surprised you would get that same exact valgrind warning after initialising the buffer, unless you are copying in unitialised data from the strcpy() further up; yes, that may be the problem? Also refer to my edited answer.
– Rob Newton
Nov 13 at 2:21
I am surprised you would get that same exact valgrind warning after initialising the buffer, unless you are copying in unitialised data from the strcpy() further up; yes, that may be the problem? Also refer to my edited answer.
– Rob Newton
Nov 13 at 2:21
after the strcpy(), it would be interesting to printf() target, to see if it is ok according to valgrind
– Rob Newton
Nov 13 at 2:27
after the strcpy(), it would be interesting to printf() target, to see if it is ok according to valgrind
– Rob Newton
Nov 13 at 2:27
add a comment |
valgrind is not saying anything about a leak. It is showing off another of its features. It has detected that you are testing the content of memory that you did not initialize. It means that target contains undefined data. If you want more detailed answer you have to show how you set up target
answered Nov 13 at 0:36
pm100
25k1557104
i declared int t_parse(char* target, FILE* fp) and then i strcpy(target, tok); I have not used target anywhere else
– Ray
Nov 13 at 0:50
you need to show where you set it up in the code that calls t_parse, you passed it in as the first parameter
– pm100
Nov 13 at 0:56
1
the probable cause is that you are looping for BUF_SIZE bytes, you should probably be only looping tillstrlen(target)
– pm100
Nov 13 at 0:58
I have tried initializing target to a char. I have tried for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); } at the beginning of the function. Still dosent work. I tried changing the for loop at line 80 to strlen(target). No luck
– Ray
Nov 13 at 1:48
add a comment |
valgrind is not saying anything about a leak. It is showing off another of its features. It has detected that you are testing the content of memory that you did not initialize. It means that target contains undefined data. If you want more detailed answer you have to show how you set up target
answered Nov 13 at 0:36
pm100
25k1557104
i declared int t_parse(char* target, FILE* fp) and then i strcpy(target, tok); I have not used target anywhere else
– Ray
Nov 13 at 0:50
you need to show where you set it up in the code that calls t_parse, you passed it in as the first parameter
– pm100
Nov 13 at 0:56
1
the probable cause is that you are looping for BUF_SIZE bytes, you should probably be only looping tillstrlen(target)
– pm100
Nov 13 at 0:58
I have tried initializing target to a char. I have tried for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); } at the beginning of the function. Still dosent work. I tried changing the for loop at line 80 to strlen(target). No luck
– Ray
Nov 13 at 1:48
add a comment |
valgrind is not saying anything about a leak. It is showing off another of its features. It has detected that you are testing the content of memory that you did not initialize. It means that target contains undefined data. If you want more detailed answer you have to show how you set up target
answered Nov 13 at 0:36
pm100
25k1557104
valgrind is not saying anything about a leak. It is showing off another of its features. It has detected that you are testing the content of memory that you did not initialize. It means that target contains undefined data. If you want more detailed answer you have to show how you set up target
answered Nov 13 at 0:36
pm100
25k1557104
answered Nov 13 at 0:36
pm100
25k1557104
answered Nov 13 at 0:36
pm100
25k1557104
answered Nov 13 at 0:36
pm100
25k1557104
25k1557104
i declared int t_parse(char* target, FILE* fp) and then i strcpy(target, tok); I have not used target anywhere else
– Ray
Nov 13 at 0:50
you need to show where you set it up in the code that calls t_parse, you passed it in as the first parameter
– pm100
Nov 13 at 0:56
1
the probable cause is that you are looping for BUF_SIZE bytes, you should probably be only looping tillstrlen(target)
– pm100
Nov 13 at 0:58
I have tried initializing target to a char. I have tried for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); } at the beginning of the function. Still dosent work. I tried changing the for loop at line 80 to strlen(target). No luck
– Ray
Nov 13 at 1:48
add a comment |
i declared int t_parse(char* target, FILE* fp) and then i strcpy(target, tok); I have not used target anywhere else
– Ray
Nov 13 at 0:50
you need to show where you set it up in the code that calls t_parse, you passed it in as the first parameter
– pm100
Nov 13 at 0:56
1
the probable cause is that you are looping for BUF_SIZE bytes, you should probably be only looping tillstrlen(target)
– pm100
Nov 13 at 0:58
I have tried initializing target to a char. I have tried for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); } at the beginning of the function. Still dosent work. I tried changing the for loop at line 80 to strlen(target). No luck
– Ray
Nov 13 at 1:48
i declared int t_parse(char* target, FILE* fp) and then i strcpy(target, tok); I have not used target anywhere else
– Ray
Nov 13 at 0:50
i declared int t_parse(char* target, FILE* fp) and then i strcpy(target, tok); I have not used target anywhere else
– Ray
Nov 13 at 0:50
you need to show where you set it up in the code that calls t_parse, you passed it in as the first parameter
– pm100
Nov 13 at 0:56
you need to show where you set it up in the code that calls t_parse, you passed it in as the first parameter
– pm100
Nov 13 at 0:56
1
1
the probable cause is that you are looping for BUF_SIZE bytes, you should probably be only looping till
strlen(target)– pm100
Nov 13 at 0:58
the probable cause is that you are looping for BUF_SIZE bytes, you should probably be only looping till
strlen(target)– pm100
Nov 13 at 0:58
I have tried initializing target to a char. I have tried for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); } at the beginning of the function. Still dosent work. I tried changing the for loop at line 80 to strlen(target). No luck
– Ray
Nov 13 at 1:48
I have tried initializing target to a char. I have tried for (int j = 0; j < BUFF_SIZE; j++) { (target[j] == 'a'); } at the beginning of the function. Still dosent work. I tried changing the for loop at line 80 to strlen(target). No luck
– Ray
Nov 13 at 1:48
add a comment |
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.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- 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%2f53272088%2fconditional-jump-or-move-depends-on-uninitialized-values-when-checking-with-if%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
