pragma-fp-contract.c
1.05 KB
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// RUN: %clang_cc1 -fsyntax-only -verify %s
void f1(void) {
int x = 0;
/* expected-error@+1 {{'#pragma fp_contract' can only appear at file scope or at the start of a compound statement}} */
#pragma STDC FP_CONTRACT ON
}
void f2(void) {
#pragma STDC FP_CONTRACT OFF
#pragma STDC FP_CONTRACT ON
}
struct S1 {
// expected-error@+1 {{this pragma cannot appear in struct declaration}}
#pragma STDC FP_CONTRACT ON
float f1;
};
union U1 {
float f1;
float f2;
// expected-error@+1 {{this pragma cannot appear in union declaration}}
#pragma STDC FP_CONTRACT ON
};
float fp_reassoc_fail(float a, float b) {
// CHECK-LABEL: fp_reassoc_fail
// expected-error@+2{{'#pragma clang fp' can only appear at file scope or at the start of a compound statement}}
float c = a + b;
#pragma clang fp reassociate(off)
return c - b;
}
float fp_reassoc_no_fast(float a, float b) {
// CHECK-LABEL: fp_reassoc_no_fast
// expected-error@+1{{unexpected argument 'fast' to '#pragma clang fp reassociate'; expected 'on' or 'off'}}
#pragma clang fp reassociate(fast)
return a - b;
}