mutiples fix for _Generic

* check that _Generic don't match unsigned char * with char *
  this case is usefull as with -funsigned-char, 'char *' are unsigned

* change VT_LONG so it's now a qualifier

  VT_LONG are never use for code generation, but only durring parsing state,
  in _Generic we need to be able to make diference between
  'long' and 'long long'
  So VT_LONG is now use as a type qualifier, it's old behaviour is still
  here, but we can keep trace of what was a long and what wasn't

* add TOK_CLONG and TOK_CULONG

  tcc was directly converting value like '7171L' into TOK_CLLONG or
  TOK_CINT depending of the machine architecture.

  because of that, we was unable to make diference between a long and a
  long long, which doesn't work with _Generic.

  So now 7171L is a TOK_CLONG, and we can handle _Generic properly

* check that _Generic can make diference between long and long long

* uncomment "type match twice" as it should now pass tests on any platforms

* add inside_generic global

  the point of this variable is to use VT_LONG in comparaison only
  when we are evaluating a _Generic.
  problem is with my lastest patchs tcc can now make the diference between
  a 'long long' and a 'long', but in 64 bit stddef.h typedef uint64_t as
  typedef signed long long int int64_t and stdint.h as unsigned long int, so tcc
  break when stdint.h and stddef.h are include together.

  Another solution woud be to modifie include/stddef.h so it define uint64_t as
  unsigned long int when processor is 64 bit, but this could break some
  legacy code, so for now, VT_LONG are use only inside generc.

* check that _Generic parse first argument correctly

* check that _Generic evaluate correctly exresion like "f() / 2"

1 files changed, 11 insertions, 2 deletions

diff --git a/tcc.h b/tcc.h
index 4b272f5..05371bd 100644
--- a/tcc.h
+++ b/tcc.h
@@ -849,7 +849,6 @@ struct filespec {
 #define VT_DOUBLE           9  /* IEEE double */
 #define VT_LDOUBLE         10  /* IEEE long double */
 #define VT_BOOL            11  /* ISOC99 boolean type */
-#define VT_LONG            12  /* long integer (NEVER USED as type, only during parsing) */
 #define VT_QLONG           13  /* 128-bit integer. Only used for x86-64 ABI */
 #define VT_QFLOAT          14  /* 128-bit float. Only used for x86-64 ABI */
 
@@ -860,6 +859,7 @@ struct filespec {
 #define VT_CONSTANT    0x0100  /* const modifier */
 #define VT_VOLATILE    0x0200  /* volatile modifier */
 #define VT_VLA         0x0400  /* VLA type (also has VT_PTR and VT_ARRAY) */
+#define VT_LONG	       0x0800
 
 /* storage */
 #define VT_EXTERN  0x00001000  /* extern definition */
@@ -939,7 +939,16 @@ struct filespec {
 #define TOK_TWOSHARPS 0xca /* ## preprocessing token */
 #define TOK_PLCHLDR  0xcb /* placeholder token as defined in C99 */
 #define TOK_NOSUBST  0xcc /* means following token has already been pp'd */
-#define TOK_PPJOIN   0xce /* A '##' in the right position to mean pasting */
+#define TOK_PPJOIN   0xcd /* A '##' in the right position to mean pasting */
+
+#define TOK_CLONG   0xce /* long constant */
+#define TOK_CULONG  0xcf /* unsigned long constant */
+
+
+#if defined TCC_TARGET_X86_64 && !defined TCC_TARGET_PE
+    #define TCC_LONG_ARE_64_BIT
+#endif
+
 
 #define TOK_SHL   0x01 /* shift left */
 #define TOK_SAR   0x02 /* signed shift right */