/* Test operation of -Wparentheses. Warnings for assignments used as truth-values. */ /* Origin: Joseph Myers */ /* { dg-do compile } */ /* { dg-options "-Wparentheses -std=gnu99" } */ int foo (int); int a, b, c; _Bool d; int bar (void) { if (a = b) /* { dg-warning "assignment" "correct warning" } */ foo (0); if ((a = b)) foo (1); if (a = a) /* { dg-warning "assignment" "correct warning" } */ foo (2); if ((a = a)) foo (3); if (b = c) /* { dg-warning "assignment" "correct warning" } */ foo (4); else foo (5); if ((b = c)) foo (6); else foo (7); if (b = b) /* { dg-warning "assignment" "correct warning" } */ foo (8); else foo (9); if ((b = b)) foo (10); else foo (11); while (c = b) /* { dg-warning "assignment" "correct warning" } */ foo (12); while ((c = b)) foo (13); while (c = c) /* { dg-warning "assignment" "correct warning" } */ foo (14); while ((c = c)) foo (15); do foo (16); while (a = b); /* { dg-warning "assignment" "correct warning" } */ do foo (17); while ((a = b)); do foo (18); while (a = a); /* { dg-warning "assignment" "correct warning" } */ do foo (19); while ((a = a)); for (;c = b;) /* { dg-warning "assignment" "correct warning" } */ foo (20); for (;(c = b);) foo (21); for (;c = c;) /* { dg-warning "assignment" "correct warning" } */ foo (22); for (;(c = c);) foo (23); d = a = b; /* { dg-warning "assignment" "correct warning" } */ foo (24); d = (a = b); foo (25); d = a = a; /* { dg-warning "assignment" "correct warning" } */ foo (26); d = (a = a); foo (27); }