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#include <stdio.h>

#if __STDC_VERSION__ < 201112L
#error This code requires a compiler supporting the C11 standard or newer
#endif

struct X { char a[8]; };

struct X salutation(void) {
  struct X result = { "Hello" };
  return result;
}

struct X addressee(void) {
  struct X result = { "world" };
  return result;
}

int main(void) {
  printf("%s, %s!\n", salutation().a, addressee().a);
  return 0;
}

Compliant Solution

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This compliant solution stores the structures returned by the call to addressee() before calling the printf() function. Consequently, this program conforms to both C99 and C11.

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Code Block
bgColor #FFCCCC lang c
#include <stdio.h> struct X { int a[6]; }; struct X addressee(void) { struct X result = { { 1, 2, 3, 4, 5, 6 } }; return result; } int main(void) { printf("%x", ++(addressee().a[0])); return 0; }

Compliant Solution

This compliant solution stores the structure returned by the call to addressee() as my_x before calling the printf() function. When the array is modified, its lifetime is no longer temporary but matches the lifetime of the block in main().

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