llvm-project/clang/test/CodeGen/sizeof-vla.c

// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o %t %s

// PR3442

void *g(unsigned long len);

void
f(int n)
{
 unsigned begin_set[n];
 
 g(sizeof(begin_set));
}
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 2009-12-16 04:14:24 +08:00			`// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o %t %s`
Make sure to cast the VLA size of array to the type of size_t. Fixes PR3442. llvm-svn: 63394 2009-01-31 00:41:04 +08:00
			`// PR3442`

Warn about code that uses variables and functions with internal linkage without defining them. This should be an error, but I'm paranoid about "uses" that end up not actually requiring a definition. I'll revisit later. Also, teach IR generation to not set internal linkage on variable declarations, just for safety's sake. Doing so produces an invalid module if the variable is not ultimately defined. Also, fix several places in the test suite where we were using internal functions without definitions. llvm-svn: 126016 2011-02-19 10:53:41 +08:00			`void *g(unsigned long len);`
Make sure to cast the VLA size of array to the type of size_t. Fixes PR3442. llvm-svn: 63394 2009-01-31 00:41:04 +08:00
			`void`
			`f(int n)`
			`{`
			`unsigned begin_set[n];`

			`g(sizeof(begin_set));`
			`}`