Merge pull request #6957 from badasahog/devBranch2

replaced `__restrict__` with `restrict`

Author: MichaelChirico

src/fread.h

@@ -182,17 +182,17 @@ typedef struct ThreadLocalFreadParsingContext
 {
   // Pointer that serves as a starting point for all offsets within the `lenOff`
   // structs.
-  const char *__restrict__ anchor;
+  const char *restrict anchor;
 
   // Output buffers for values with different alignment requirements. For
   // example all `lenOff` columns, `double` columns and `int64` columns will be
   // written to buffer `buff8`; at the same time `bool` and `int8` columns will
   // be stored in memory buffer `buff1`.
   // Within each buffer the data is stored in row-major order, i.e. in the same
   // order as in the original CSV file.
-  void *__restrict__ buff8;
-  void *__restrict__ buff4;
-  void *__restrict__ buff1;
+  void *restrict buff8;
+  void *restrict buff4;
+  void *restrict buff1;
 
   // Size (in bytes) for a single row of data within the buffers `buff8`,
   // `buff4` and `buff1` correspondingly.