diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/vla-tert-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/vla-tert-1.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vla-tert-1.c b/gcc/testsuite/gcc.dg/vla-tert-1.c new file mode 100644 index 0000000..dfbb2e6 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vla-tert-1.c @@ -0,0 +1,293 @@ +/* { dg-do run } + * { dg-options "-std=c99" } + * */ + + +// For the conditional operator and variably modified types, +// verify that the size expression on the selected branch +// is evaluated and the correct result is returned. + + +// keep track which side was evaluated. +static int fc[2] = { 0 }; + +static int f(int s, int c) +{ + fc[c]++; + return s; +} + + +int main() +{ + // two VLAs, constant condition + + fc[0] = fc[1] = 0; + + if (5 != sizeof(*(1 ? (char(*)[ f(5, 0) ])0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + if ((1 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + fc[0] = fc[1] = 0; + + if (3 != sizeof(*(0 ? (char(*)[ f(5, 0) ])0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); // fails + + if ((0 != fc[0]) || (1 != fc[1])) + __builtin_abort(); // fails + + // two VLAs + + int c = 0; + fc[0] = fc[1] = 0; + + if (3 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); // fails + + if ((0 != fc[0]) || (1 != fc[1])) + __builtin_abort(); + + c = 1; + fc[0] = fc[1] = 0; + + if (5 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + if ((1 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // VLA + array of unknown size, VLA side is evaluated, defined + + c = 0; + fc[0] = fc[1] = 0; + + if (3 != sizeof(*(c ? (char(*)[ ])0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + if ((0 != fc[0]) || (1 != fc[1])) + __builtin_abort(); + + c = 1; + fc[0] = fc[1] = 0; + + if (5 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : (char(*)[ ])0))) + __builtin_abort(); + + if ((1 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // VLA + array of unknown size, VLA side is not evaluated + + c = 1; + fc[0] = fc[1] = 0; + + sizeof(*(c ? (char(*)[ ])0 : (char(*)[ f(3, 1) ])0)); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // without sizeof + + fc[0] = fc[1] = 0; + + (c ? (char(*)[ ])0 : (char(*)[ f(3, 1) ])0); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + c = 0; + fc[0] = fc[1] = 0; + + sizeof(*(c ? (char(*)[ f(5, 0) ])0 : (char(*)[ ])0)); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // without sizeof + + fc[0] = fc[1] = 0; + + (c ? (char(*)[ f(5, 0) ])0 : (char(*)[ ])0); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + + // VLA + array of known size, VLA side is evaluated + + c = 0; + fc[0] = fc[1] = 0; + + if (3 != sizeof(*(c ? (char(*)[3])0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + // sizeof is not evaluated because not a VLA + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + c = 0; + fc[0] = fc[1] = 0; + + // without sizeof + + (c ? (char(*)[3])0 : (char(*)[ f(3, 1) ])0); + + if ((0 != fc[0]) || (1 != fc[1])) + __builtin_abort(); + + c = 1; + fc[0] = fc[1] = 0; + + if (5 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : (char(*)[5])0))) + __builtin_abort(); + + // sizeof is not evaluated because not a VLA + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // without sizeof + + fc[0] = fc[1] = 0; + + (c ? (char(*)[ f(5, 0) ])0 : (char(*)[ 5 ])0); + + if ((1 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // VLA + array of known size, VLA side is not evaluated + + c = 0; + fc[0] = fc[1] = 0; + + if (3 != sizeof(*(c ? (char(*)[ f(3, 0) ])0 : (char(*)[ 3 ])0))) + __builtin_abort(); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + c = 1; + fc[0] = fc[1] = 0; + + if (5 != sizeof(*(c ? (char(*)[ 5 ])0 : (char(*)[ f(5, 1) ])0))) + __builtin_abort(); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // VM type on one side, null pointer on the other side + + c = 0; + fc[0] = fc[1] = 0; + + if (3 != sizeof(*(c ? (void*)0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + if ((0 != fc[0]) || (1 != fc[1])) + __builtin_abort(); + + c = 1; + fc[0] = fc[1] = 0; + + if (5 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : (void*)0))) + __builtin_abort(); + + if ((1 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + +#if 0 + // these cases are not fixable + // VM types on one side, null pointer on the other side + c = 1; + fc[0] = fc[1] = 0; + + if (3 != sizeof(*(c ? (void*)0 : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + if ((0 != fc[0]) || (1 != fc[1])) + __builtin_abort(); + + c = 0; + fc[0] = fc[1] = 0; + + if (5 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : (void*)0))) + __builtin_abort(); + + if ((1 != fc[0]) || (0 != fc[1])) + __builtin_abort(); +#endif + + // VLA + void* + void* p = 0; + c = 0; + fc[0] = fc[1] = 0; + + if (1 != sizeof(*(c ? p : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + // not a VLA or evaluated + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // .. without sizeof + + (c ? p : (char(*)[ f(3, 1) ])0); + + if ((0 != fc[0]) || (1 != fc[1])) + __builtin_abort(); + + c = 1; + fc[0] = fc[1] = 0; + + if (1 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : p))) + __builtin_abort(); + + // not a VLA + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // .. without sizeof + + (c ? (char(*)[ f(5, 0) ])0 : p); + + if ((1 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // VLA + void*, VLA side not evaluated + + c = 1; + fc[0] = fc[1] = 0; + + if (1 != sizeof(*(c ? p : (char(*)[ f(3, 1) ])0))) + __builtin_abort(); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // .. without sizeof + + (c ? p : (char(*)[ f(3, 1) ])0); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + c = 0; + fc[0] = fc[1] = 0; + + if (1 != sizeof(*(c ? (char(*)[ f(5, 0) ])0 : p))) + __builtin_abort(); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + // .. without sizeof + + (c ? (char(*)[ f(5, 0) ])0 : p); + + if ((0 != fc[0]) || (0 != fc[1])) + __builtin_abort(); + + return 0; +} + |