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also test (some of) the cases with an external function

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mrdudz 2021-03-22 23:37:33 +01:00
parent 55e89416cd
commit d3cd668585
1 changed files with 8 additions and 9 deletions
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17
test/val/constexpr.c
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@ -88,19 +88,18 @@ void test2(void)
TESTEXPR(&s[0].b < &s[1].a);
}
/* FIXME: how to deal with the extern stuff in the testbench? */
extern int g();
/* we abuse the close function here, close(-1) will return -1 */
extern int close(int fd);
void test3(void)
{
#if 0
TESTEXPR(g()); /* Pure: No; Static: No; Immutable: No; Compile-Time-Known: No */
TESTEXPR(g(), 1); /* Pure: No; Static: No; Immutable: Yes; Compile-Time-Known: Yes */
TESTEXPR((void)g()); /* Pure: No; Static: No; Immutable: Yes; Compile-Time-Known: Yes */
TESTEXPR(sizeof(g())); /* Pure: Yes; Static: Yes; Immutable: Yes; Compile-Time-Known: Yes */
TESTEXPR(close(-1)); /* Pure: No; Static: No; Immutable: No; Compile-Time-Known: No */
TESTEXPR((close(-1), 1)) /* Pure: No; Static: No; Immutable: Yes; Compile-Time-Known: Yes */
/* Error: Scalar expression expected */
// TESTEXPR((void)close(-1)); /* Pure: No; Static: No; Immutable: Yes; Compile-Time-Known: Yes */
TESTEXPR(sizeof(close(-1))); /* Pure: Yes; Static: Yes; Immutable: Yes; Compile-Time-Known: Yes */
/* NOT detected by the compiler as constant */
TESTEXPR(g() * 0); /* Pure: No; Static: No; Immutable: Yes; Compile-Time-Known: Yes */
#endif
TESTEXPRFALSE(close(-1) * 0); /* Pure: No; Static: No; Immutable: Yes; Compile-Time-Known: Yes */
}
int main(void)