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cae0855a62
Some older versions of clang emitted bit offsets that were negative and these bitfields would have their bitfield-ness stripped off and it would cause a clang assertion in clang assertions were enabled. I updated the bitfield C test to make sure we don't regress. <rdar://problem/21082998> llvm-svn: 267248
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
//===-- main.c --------------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include <stdint.h>
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#include <stdio.h>
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int main (int argc, char const *argv[])
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{
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struct Bits
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{
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uint32_t : 1, // Unnamed bitfield
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b1 : 1,
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b2 : 2,
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: 2, // Unnamed bitfield
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b3 : 3,
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: 2, // Unnamed bitfield (this will get removed)
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b4 __attribute__ ((aligned(16))),
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b5 : 5,
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b6 : 6,
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b7 : 7,
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four : 4;
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};
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printf("%lu", sizeof(struct Bits));
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struct Bits bits;
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int i;
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for (i=0; i<(1<<1); i++)
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bits.b1 = i; //// break $source:$line
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for (i=0; i<(1<<2); i++)
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bits.b2 = i; //// break $source:$line
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for (i=0; i<(1<<3); i++)
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bits.b3 = i; //// break $source:$line
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for (i=0; i<(1<<4); i++)
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bits.b4 = i; //// break $source:$line
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for (i=0; i<(1<<5); i++)
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bits.b5 = i; //// break $source:$line
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for (i=0; i<(1<<6); i++)
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bits.b6 = i; //// break $source:$line
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for (i=0; i<(1<<7); i++)
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bits.b7 = i; //// break $source:$line
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for (i=0; i<(1<<4); i++)
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bits.four = i; //// break $source:$line
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struct MoreBits
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{
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uint32_t a : 3;
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uint8_t : 1;
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uint8_t b : 1;
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uint8_t c : 1;
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uint8_t d : 1;
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};
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struct MoreBits more_bits;
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more_bits.a = 3;
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more_bits.b = 0;
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more_bits.c = 1;
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more_bits.d = 0;
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#pragma pack(1)
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struct PackedBits
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{
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char a;
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uint32_t b : 5,
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c : 27;
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};
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#pragma pack()
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struct PackedBits packed;
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packed.a = 'a';
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packed.b = 10;
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packed.c = 0x7112233;
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return 0; //// Set break point at this line.
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}
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