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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. #pragma GCC optimize("O0")
  5.  
  6. // Нужно, чтобы GCC разместил буферы строго последовательно.
  7. typedef struct buffers {
  8.     char first[8];
  9.     char second[32];
  10. } buffers;
  11.  
  12. int main(void) {
  13.  
  14.     buffers foo = { .second = ": strncpy is broken!" };
  15.  
  16.     strncpy(foo.first, "remember", sizeof(foo.first));
  17.     puts(foo.first);
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout 0s 9424KB
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Standard input is empty
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remember: strncpy is broken!
https://ideone.com/FMwQlp
strncpy is broken
language:
C99 (gcc 8.3)
created:
5 years ago
visibility:
secret

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