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The following patch implements the C2Y N3298 paper Introduce complex literals by providing different (or no) diagnostics on imaginary constants (except for integer ones). For _DecimalN constants we don't support _Complex _DecimalN and error on any i/j suffixes mixed with DD/DL/DF, so nothing changed there. 2024-11-13 Jakub Jelinek <jakub@redhat.com> PR c/117029 libcpp/ * include/cpplib.h (struct cpp_options): Add imaginary_constants member. * init.cc (struct lang_flags): Add imaginary_constants bitfield. (lang_defaults): Add column for imaginary_constants. (cpp_set_lang): Copy over imaginary_constants. * expr.cc (cpp_classify_number): Diagnose CPP_N_IMAGINARY non-CPP_N_FLOATING constants differently for C. gcc/testsuite/ * gcc.dg/cpp/pr7263-3.c: Adjust expected diagnostic wording. * gcc.dg/c23-imaginary-constants-1.c: New test. * gcc.dg/c23-imaginary-constants-2.c: New test. * gcc.dg/c23-imaginary-constants-3.c: New test. * gcc.dg/c23-imaginary-constants-4.c: New test. * gcc.dg/c23-imaginary-constants-5.c: New test. * gcc.dg/c23-imaginary-constants-6.c: New test. * gcc.dg/c23-imaginary-constants-7.c: New test. * gcc.dg/c23-imaginary-constants-8.c: New test. * gcc.dg/c23-imaginary-constants-9.c: New test. * gcc.dg/c23-imaginary-constants-10.c: New test. * gcc.dg/c2y-imaginary-constants-1.c: New test. * gcc.dg/c2y-imaginary-constants-2.c: New test. * gcc.dg/c2y-imaginary-constants-3.c: New test. * gcc.dg/c2y-imaginary-constants-4.c: New test. * gcc.dg/c2y-imaginary-constants-5.c: New test. * gcc.dg/c2y-imaginary-constants-6.c: New test. * gcc.dg/c2y-imaginary-constants-7.c: New test. * gcc.dg/c2y-imaginary-constants-8.c: New test. * gcc.dg/c2y-imaginary-constants-9.c: New test. * gcc.dg/c2y-imaginary-constants-10.c: New test. * gcc.dg/c2y-imaginary-constants-11.c: New test. * gcc.dg/c2y-imaginary-constants-12.c: New test.
65 lines
2.8 KiB
C
65 lines
2.8 KiB
C
/* Test that imaginary constants are diagnosed in C23 mode: -pedantic. */
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/* { dg-do run } */
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/* { dg-options "-std=c23 -pedantic" } */
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/* { dg-add-options float32 } */
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/* { dg-add-options float64 } */
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/* { dg-add-options float32x } */
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/* { dg-require-effective-target float32 } */
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/* { dg-require-effective-target float32x } */
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/* { dg-require-effective-target float64 } */
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_Complex _Float32 a = 1.if32; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float32 b = 2.F32j; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float32 c = 3.f32i; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float32 d = 4.JF32; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float64 e = 1.if64; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float64 f = 2.F64j; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float64 g = 3.f64i; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float64 h = 4.JF64; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float32x i = 1.if32x; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float32x j = 2.F32xj; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float32x k = 3.f32xI; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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_Complex _Float32x l = 4.JF32x; /* { dg-warning "imaginary constants are a C2Y feature or GCC extension" } */
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__extension__ _Complex _Float32 m = 1.if32;
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__extension__ _Complex _Float32 n = 2.F32j;
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__extension__ _Complex _Float32 o = 3.f32i;
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__extension__ _Complex _Float32 p = 4.JF32;
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__extension__ _Complex _Float64 q = 1.if64;
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__extension__ _Complex _Float64 r = 2.F64j;
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__extension__ _Complex _Float64 s = 3.f64i;
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__extension__ _Complex _Float64 t = 4.JF64;
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__extension__ _Complex _Float32x u = 1.if32x;
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__extension__ _Complex _Float32x v = 2.F32xj;
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__extension__ _Complex _Float32x w = 3.f32xI;
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__extension__ _Complex _Float32x x = 4.JF32x;
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int
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main ()
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{
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if (a * a != -1.f32
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|| b * b != -4.f32
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|| c * c != -9.f32
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|| d * d != -16.f32
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|| e * e != -1.f64
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|| f * f != -4.f64
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|| g * g != -9.f64
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|| h * h != -16.f64
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|| i * i != -1.f32x
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|| j * j != -4.f32x
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|| k * k != -9.f32x
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|| l * l != -16.f32x
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|| m * m != -1.f32
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|| n * n != -4.f32
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|| o * o != -9.f32
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|| p * p != -16.f32
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|| q * q != -1.f64
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|| r * r != -4.f64
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|| s * s != -9.f64
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|| t * t != -16.f64
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|| u * u != -1.f32x
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|| v * v != -4.f32x
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|| w * w != -9.f32x
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|| x * x != -16.f32x)
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__builtin_abort ();
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}
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