Unsynchronized use of file system operations
The API functions that access the file system such as fopen, mkdir, and chmod are not thread-safe and therefore should not be used in a multi-threaded region. This can cause different execution results in parallel and sequential mode.
ID |
Observation |
Description |
---|---|---|
1 |
Call site |
The place the unsafe function was called |
#include <stdio.h> int main(int argc, char **argv) { int i; FILE * fp; #pragma omp parallel for lastprivate(fp) for (i = 0; i < 6; i++) { fp = fopen("my_file.txt", "r"); } fclose(fp); return 0; }
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