gcc/testsuite/gcc.dg/tree-ssa/pr49923.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3" } */
   3
   4 #define PACKED __attribute__(( packed ))
   5
   6 struct PACKED aostk_point_u8 {
   7   unsigned char x;
   8   unsigned char y;
   9 };
  10
  11 struct PACKED aostk_size_u8 {
  12   unsigned char width;
  13   unsigned char height;
  14 };
  15
  16 struct PACKED aostk_glyph {
  17         unsigned short i;
  18         struct aostk_size_u8 size;
  19         char top;
  20         struct aostk_point_u8 advance;
  21         unsigned char pitch;
  22         unsigned char* data;
  23         char left;
  24 };
  25
  26
  27 struct PACKED aostk_font {
  28         unsigned short numglyphs;
  29         unsigned char height;
  30         struct aostk_glyph* glyphs;
  31 };
  32
  33 struct aostk_font glob_font;
  34
  35 static struct aostk_glyph* aostk_get_glyph(struct aostk_font* f, unsigned int c) {
  36         return f->glyphs;
  37 }
  38
  39 int aostk_font_strwidth(struct aostk_font* font, const char* str) {
  40         struct aostk_glyph* g = aostk_get_glyph(font, 0);
  41         return (g != 0);
  42 }
  43
  44 struct aostk_font*
  45 __attribute__ ((noinline, noclone))
  46 get_some_font (void)
  47 {
  48   return &glob_font;
  49 }
  50
  51 int main (int argc, char *argv[])
  52 {
  53   return (int) aostk_font_strwidth (get_some_font (), "sth");
  54
  55 }