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Diffstat (limited to 'test/Unit/trampoline_setup_test.c')
-rw-r--r-- | test/Unit/trampoline_setup_test.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/test/Unit/trampoline_setup_test.c b/test/Unit/trampoline_setup_test.c new file mode 100644 index 000000000000..8d1c968b274a --- /dev/null +++ b/test/Unit/trampoline_setup_test.c @@ -0,0 +1,63 @@ +/* ===-- trampoline_setup_test.c - Test __trampoline_setup -----------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is distributed under the University of Illinois Open Source + * License. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + */ + + +#include <stdio.h> +#include <string.h> +#include <stdint.h> +#include <sys/mman.h> + +/* + * Tests nested functions + * The ppc compiler generates a call to __trampoline_setup + * The i386 and x86_64 compilers generate a call to ___enable_execute_stack + */ + +/* + * Note that, nested functions are not ISO C and are not supported in Clang. + */ + +#if !defined(__clang__) + +typedef int (*nested_func_t)(int x); + +nested_func_t proc; + +int main() { + /* Some locals */ + int c = 10; + int d = 7; + + /* Define a nested function: */ + int bar(int x) { return x*5 + c*d; }; + + /* Assign global to point to nested function + * (really points to trampoline). */ + proc = bar; + + /* Invoke nested function: */ + c = 4; + if ( (*proc)(3) != 43 ) + return 1; + d = 5; + if ( (*proc)(4) != 40 ) + return 1; + + /* Success. */ + return 0; +} + +#else + +int main() { + return 0; +} + +#endif |