MinGW-w64 GCC Bidirectional SIGSEGV

[zufuliu]

Please read https://sourceforge.net/p/scintilla/bugs/2026/ and https://sourceforge.net/p/mingw-w64/bugs/753/.

The BOOL isTrimmed field is missing from DWRITE_HIT_TEST_METRICS structure in MinGW-w64 dwrite.h (line 498), the whole definition of DWRITE_HIT_TEST_METRICS is:

typedef struct DWRITE_HIT_TEST_METRICS {
  UINT32  textPosition;
  UINT32  length;
  FLOAT   left;
  FLOAT   top;
  FLOAT   width;
  FLOAT   height;
  UINT32  bidiLevel;
  WINBOOL isText;
  WINBOOL isTrimmed;
} DWRITE_HIT_TEST_METRICS;

[zufuliu]

Mingw-w64 v6.0.0 is released on 2018-09-17, this fixed and will come with GCC 8.2.0.