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How do I analyze a program's core dump file with GDB when it has command-line parameters?
... *(int*)(NULL) = i; /* line 7 */
return i - 1;
}
int main(int argc, char **argv) {
/* Setup some memory. */
char data_ptr[] = "string in data segment";
char *mmap_ptr;
char *text_ptr = "string in text segment";
(void)argv;
mmap_ptr = (char *)malloc(sizeof(data_ptr) + 1...
UUID max character length
... primary key for out oracle DB, and trying to determine an appropriate max character length for the VARCHAR. Apparently this is 36 characters but we have noticed UUID'S generated which are longer than this - up to 60 characters in length.
Does anyone know a suitable max char length for UUID??
...
What does the comma operator , do?
...ariables used in a for loop, and it gives the following example:
void rev(char *s, size_t len)
{
char *first;
for ( first = s, s += len - 1; s >= first; --s)
/*^^^^^^^^^^^^^^^^^^^^^^^*/
putchar(*s);
}
Otherwise there are not many great uses of the comma operator, although it i...
Default template arguments for function templates
...late <typename T> T prettify(T t) { return t; }
std::string prettify(char c) {
std::stringstream ss;
if (isprint((unsigned char)c)) {
ss << "'" << c << "'";
} else {
ss << (int)c;
}
return ss.str();
}
template <typename S, typena...
Padding characters in printf
...t you hard code the value to the largest one you need and use padlength to select the actual length to output.
– Paused until further notice.
Nov 19 '18 at 13:53
...
How does this giant regex work?
...K3dZkPHj9ykFvJn7DoDNyxT7o1Grc6e1J+woyBmB8F8OrAlZfLHvfFi7dPd//wN/t+J3Cjygmk3ip0wLmOeHTcMg7AburMgjL3pqFynr97U60ZuXLZ5sh+M7OrRh7dvzUT43CWAyK6m8k2cm6574/bnMZYXexNXgkAyvXd9b+LF5eTjxBl5/e4f8yB2o244nyKQSB64Q2/qlm1ov9PD4yO7yuxmbZMqjU08SucezfplwQmPhvNpH4lgn06PoS+8WeQ70diFHiGW4ECPQjeeh1PmRV3OKDLxOWccQD8r2ykMN...
What is the default value for enum variable?
...
Thanks, and what about enums defined with char instead of int. e.g. enum Status { Active = 'A', Inactive='I'}
– Fernando Torres
Apr 24 '15 at 16:17
...
How long should SQL email fields be? [duplicate]
...l address can basically be indefinitely long so any size I impose on my varchar email address field is going to be arbitrary. However, I was wondering what the "standard" is? How long do you guys make it? (same question for Name field...)
...
Read/write files within a Linux kernel module
...ad.h>
Opening a file (similar to open):
struct file *file_open(const char *path, int flags, int rights)
{
struct file *filp = NULL;
mm_segment_t oldfs;
int err = 0;
oldfs = get_fs();
set_fs(get_ds());
filp = filp_open(path, flags, rights);
set_fs(oldfs);
if (I...
How to remove first 10 characters from a string?
How to ignore the first 10 characters of a string?
12 Answers
12
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