mirror of https://github.com/pyodide/pyodide.git
76 lines
1.8 KiB
Python
76 lines
1.8 KiB
Python
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import subprocess
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from . import common
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def test_emulate_function(tmpdir):
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with tmpdir.as_cwd():
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with open("library.c", "w") as f:
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f.write(
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"""\
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#include <stdio.h>
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#include <stdlib.h>
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#include <setjmp.h>
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#include <assert.h>
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// This can be any function that has a signature not found in main.
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__attribute__ ((noinline)) int indirect_function(int a, float b, int c, double d) {
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return a;
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}
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typedef int (*type_iifid) (int, float, int, double);
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void foo() {
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// Hack to force inclusion of malloc
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volatile int x = (int) malloc(1);
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free((void *) x);
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type_iifid fp = &indirect_function;
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jmp_buf buf;
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int i = setjmp(buf);
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printf("%d\\n", i);
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assert(fp(i, 0, 0, 0) == i);
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if (i == 0) longjmp(buf, 1);
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}
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"""
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)
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with open("main.c", "w") as f:
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f.write(common.MAIN_C)
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subprocess.run(
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[
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"emcc",
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"-s",
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"SIDE_MODULE=1",
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"library.c",
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"-o",
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"library.wasm",
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"-s",
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"EMULATE_FUNCTION_POINTER_CASTS=1",
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"-s",
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"EXPORT_ALL=1",
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],
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check=True,
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env=common.env,
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)
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subprocess.run(
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[
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"emcc",
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"-s",
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"MAIN_MODULE=1",
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"main.c",
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"--embed-file",
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"library.wasm",
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"-s",
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"EMULATE_FUNCTION_POINTER_CASTS=1",
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],
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check=True,
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env=common.env,
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)
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out = subprocess.run(
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["node", "a.out.js"], capture_output=True, check=True, env=common.env
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)
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assert out.stdout == b"hello from main\n0\n4\n"
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