diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/g++.dg/warn/sequence-pt-pr17880.C')
-rw-r--r-- | gcc-4.9/gcc/testsuite/g++.dg/warn/sequence-pt-pr17880.C | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/warn/sequence-pt-pr17880.C b/gcc-4.9/gcc/testsuite/g++.dg/warn/sequence-pt-pr17880.C new file mode 100644 index 000000000..01d87be8b --- /dev/null +++ b/gcc-4.9/gcc/testsuite/g++.dg/warn/sequence-pt-pr17880.C @@ -0,0 +1,54 @@ +// PR 17880 +// { dg-do compile } +// { dg-options "-Wsequence-point" } + +int +foo (int x) +{ + unsigned int a; + int b; + + b = (a += 5) > a; // { dg-warning "undefined" "sequence point warning" } + b = (a += 5) + a == 10; // { dg-warning "undefined" "sequence point warning" } + b = (a -= 5) > a; // { dg-warning "undefined" "sequence point warning" } + b = (a -= 5) + a == 10; // { dg-warning "undefined" "sequence point warning" } + b = a-- > a; // { dg-warning "undefined" "sequence point warning" } + b = a-- + a == 10; // { dg-warning "undefined" "sequence point warning" } + b = ++a > a; // { dg-warning "undefined" "sequence point warning" } + b = ++a + a == 10; // { dg-warning "undefined" "sequence point warning" } + + if ((a += 5) > a) return -1; // { dg-warning "undefined" "sequence point warning" } + if ((a += 5) + a == 10) return -1; // { dg-warning "undefined" "sequence point warning" } + if ((a -= 5) > a) return -1; // { dg-warning "undefined" "sequence point warning" } + if ((a -= 5) + a == 10) return -1; // { dg-warning "undefined" "sequence point warning" } + if (a-- > a) return -1; // { dg-warning "undefined" "sequence point warning" } + if (a-- + a == 10) return -1; // { dg-warning "undefined" "sequence point warning" } + if (++a > a) return -1; // { dg-warning "undefined" "sequence point warning" } + if (++a + a == 10) return -1; // { dg-warning "undefined" "sequence point warning" } + do {} while ((a += 5) > a); // { dg-warning "undefined" "sequence point warning" } + while ((a += 5) > a); // { dg-warning "undefined" "sequence point warning" } + for ((a += 5) > a;;); // { dg-warning "undefined" "sequence point warning" } + for (b = (a += 5) > a;;); // { dg-warning "undefined" "sequence point warning" } + for (; (a += 5) > a;); // { dg-warning "undefined" "sequence point warning" } + for (;; b = (a += 5) > a); // { dg-warning "undefined" "sequence point warning" } + for (;; a++ + a++); // { dg-warning "undefined" "sequence point warning" } + if (a) a++ - a--; // { dg-warning "undefined" "sequence point warning" } + ((a +=5) > a) ? a : b; // { dg-warning "undefined" "sequence point warning" } + return (a++ - a--); // { dg-warning "undefined" "sequence point warning" } +} + +void bar (int i) +{ + int a = i++ - i++; // { dg-warning "undefined" "sequence point warning" } +} + +void baz (int i) +{ + switch (i++ + i++) // { dg-warning "undefined" "sequence point warning" } + { + case 1: + i++ - i++; // { dg-warning "undefined" "sequence point warning" } + case 2: + break; + } +} |