| 1 | // RUN: %clang_builtins %s %librt -o %t && %run %t |
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| 2 | // REQUIRES: librt_has_trampoline_setup |
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| 3 | |
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| 4 | #include <stdio.h> |
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| 5 | #include <string.h> |
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| 6 | #include <stdint.h> |
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| 7 | |
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| 8 | /* |
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| 9 | * Tests nested functions |
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| 10 | * The ppc and aarch64 compilers generates a call to __trampoline_setup |
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| 11 | * The i386 and x86_64 compilers generate a call to ___enable_execute_stack |
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| 12 | */ |
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| 13 | |
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| 14 | /* |
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| 15 | * Note that, nested functions are not ISO C and are not supported in Clang. |
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| 16 | */ |
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| 17 | |
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| 18 | #if !defined(__clang__) |
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| 19 | |
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| 20 | typedef int (*nested_func_t)(int x); |
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| 21 | |
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| 22 | nested_func_t proc; |
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| 23 | |
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| 24 | int main() { |
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| 25 | /* Some locals */ |
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| 26 | int c = 10; |
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| 27 | int d = 7; |
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| 28 | |
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| 29 | /* Define a nested function: */ |
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| 30 | int bar(int x) { return x*5 + c*d; }; |
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| 31 | |
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| 32 | /* Assign global to point to nested function |
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| 33 | * (really points to trampoline). */ |
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| 34 | proc = bar; |
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| 35 | |
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| 36 | /* Invoke nested function: */ |
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| 37 | c = 4; |
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| 38 | if ( (*proc)(3) != 43 ) |
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| 39 | return 1; |
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| 40 | d = 5; |
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| 41 | if ( (*proc)(4) != 40 ) |
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| 42 | return 1; |
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| 43 | |
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| 44 | /* Success. */ |
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| 45 | return 0; |
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| 46 | } |
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| 47 | |
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| 48 | #else |
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| 49 | |
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| 50 | int main() { |
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| 51 | printf(format: "skipped\n" ); |
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| 52 | return 0; |
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| 53 | } |
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| 54 | |
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| 55 | #endif |
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| 56 | |
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