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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.
20 lines
611 B
C
20 lines
611 B
C
/* PR 7263: __extension__ keyword doesn't suppress warning on LL or ULL constants. */
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/* { dg-do compile } */
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/* { dg-options "-std=c99 -pedantic-errors -ftrack-macro-expansion=0" } */
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#include "pr7263-3.h"
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__complex__ bar () /* { dg-error "ISO C does not support plain .complex. meaning .double complex." } */
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{
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return _Complex_I_ext;
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}
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__extension__ __complex__
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bar2 ()
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{
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return _Complex_I;
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}
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__complex__ bar3 () /* { dg-error "ISO C does not support plain .complex. meaning .double complex." } */
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{
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return _Complex_I; /* { dg-error "imaginary constants are a C2Y feature or GCC extension" } */
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}
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