From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/gnu89-const-expr-2.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/gnu89-const-expr-2.c (limited to 'gcc/testsuite/gcc.dg/gnu89-const-expr-2.c') diff --git a/gcc/testsuite/gcc.dg/gnu89-const-expr-2.c b/gcc/testsuite/gcc.dg/gnu89-const-expr-2.c new file mode 100644 index 000000000..fd4d18ed9 --- /dev/null +++ b/gcc/testsuite/gcc.dg/gnu89-const-expr-2.c @@ -0,0 +1,26 @@ +/* Test for constant expressions: __builtin_choose_expr. */ +/* Origin: Joseph Myers */ +/* { dg-do compile } */ +/* { dg-options "-std=gnu89 -pedantic-errors" } */ + +#include + +int a, b, c; + +void +f (void) +{ + /* __builtin_choose_expr acts exactly like the chosen argument for + all constant expression purposes. */ + enum e { + E1 = __builtin_choose_expr (1, 1, ++b) + }; + /* The first argument to __builtin_choose_expr must be an integer + constant expression. */ + a = __builtin_choose_expr ((void *)0, b, c); /* { dg-error "constant" } */ + a = __builtin_choose_expr (0 * (INT_MAX + 1), b, c); /* { dg-warning "integer overflow in expression" } */ + /* { dg-error "overflow in constant expression" "constant" { target *-*-* } 21 } */ + a = __builtin_choose_expr (1 / 0, 0, 0); /* { dg-warning "division by zero" } */ + /* { dg-error "not a constant" "error" { target *-*-* } 23 } */ + a = __builtin_choose_expr ((1 ? 1 : a), b, c); /* { dg-error "constant" } */ +} -- cgit v1.2.3