b114940012
This flag does nothing for clang and is apparently not supported by GCC: aarch64-linux-gnu-gcc: error: unrecognized command-line option '-fnested-functions'; did you mean '-Wunused-function'? It looks like it was maybe supported by Apple GCC, but that is no longer a supported compiler. Differential Revision: https://reviews.llvm.org/D153819
56 lines
1005 B
C
56 lines
1005 B
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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// REQUIRES: librt_has_trampoline_setup
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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/*
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* Tests nested functions
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* The ppc compiler generates a call to __trampoline_setup
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* The i386 and x86_64 compilers generate a call to ___enable_execute_stack
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*/
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/*
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* Note that, nested functions are not ISO C and are not supported in Clang.
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*/
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#if !defined(__clang__)
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typedef int (*nested_func_t)(int x);
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nested_func_t proc;
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int main() {
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/* Some locals */
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int c = 10;
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int d = 7;
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/* Define a nested function: */
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int bar(int x) { return x*5 + c*d; };
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/* Assign global to point to nested function
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* (really points to trampoline). */
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proc = bar;
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/* Invoke nested function: */
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c = 4;
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if ( (*proc)(3) != 43 )
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return 1;
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d = 5;
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if ( (*proc)(4) != 40 )
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return 1;
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/* Success. */
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return 0;
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}
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#else
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int main() {
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printf("skipped\n");
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return 0;
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}
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#endif
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