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/c99-const-expr-5.c | 39 +++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/c99-const-expr-5.c (limited to 'gcc/testsuite/gcc.dg/c99-const-expr-5.c') diff --git a/gcc/testsuite/gcc.dg/c99-const-expr-5.c b/gcc/testsuite/gcc.dg/c99-const-expr-5.c new file mode 100644 index 000000000..3bfa7f6fe --- /dev/null +++ b/gcc/testsuite/gcc.dg/c99-const-expr-5.c @@ -0,0 +1,39 @@ +/* Test null pointer constants: typedefs for void should be OK but not + qualified void. */ +/* Origin: Joseph Myers */ +/* { dg-do compile } */ +/* { dg-options "-std=iso9899:1999 -pedantic-errors" } */ + +typedef void V; +int *p; +long *q; +int j; +void (*fp)(void); + +void +f (void) +{ + /* (V *)0 is a null pointer constant, so the assignment should be + diagnosed. */ + q = (j ? p : (V *)0); /* { dg-error "assignment from incompatible pointer type" } */ + q = (j ? p : (void *)0); /* { dg-error "assignment from incompatible pointer type" } */ + /* And this conversion should be valid. */ + (void (*)(void))(V *)0; + (void (*)(void))(void *)0; + /* Pointers to qualified void are not valid null pointer + constants. */ + fp = (const void *)0; /* { dg-error "ISO C forbids assignment between function pointer and 'void \\*'" } */ + fp = (void *)0; + fp = (V *)0; + fp = 0; + fp == 0; + 0 == fp; + fp == (void *)0; + (void *)0 == fp; + fp == (V *)0; + (V *)0 == fp; + fp == (V *)1; /* { dg-error "ISO C forbids comparison of 'void \\*' with function pointer" } */ + (V *)1 == fp; /* { dg-error "ISO C forbids comparison of 'void \\*' with function pointer" } */ + fp == (const void *)0; /* { dg-error "ISO C forbids comparison of 'void \\*' with function pointer" } */ + (const void *)0 == fp; /* { dg-error "ISO C forbids comparison of 'void \\*' with function pointer" } */ +} -- cgit v1.2.3