From 66ffc2ae07941e00406493020579a0b695b535ee Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Wed, 15 Oct 2025 10:44:06 +0200
Subject: implement long double (as double synonym). wchar_t placeholder

---
 c.c             |  6 ++----
 embedfilesdir.c |  1 +
 ir.c            |  1 +
 lex.c           |  3 +++
 targ.c          | 11 +++++++----
 type.c          |  1 -
 6 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/c.c b/c.c
index 6b29021..42e2c35 100644
--- a/c.c
+++ b/c.c
@@ -2047,9 +2047,7 @@ End:
       else if (arith == KDOUBLE)
          t = TYDOUBLE;
       else if (arith == (KLONG | KDOUBLE)) {
-         /* t = TYLDOUBLE; */
-         warn(&span, "`long double' is unsupported");
-         t = TYDOUBLE;
+         t = TYLDOUBLE;
       } else if (arith == KBOOL)
          t = TYBOOL;
       else if (arith == KCHAR)
@@ -2697,7 +2695,7 @@ narrow(struct function *fn, enum irclass to, enum typetag tt, union ref ref, uin
    if (targ_primsizes[tt] < cls2siz[to]) {
       ins.cls = to;
       if (isfltt(tt)) {
-         assert(to == KF4 && tt == TYDOUBLE);
+         assert(to == KF4 && tt >= TYDOUBLE);
          ins.op = Ocvtf8f4;
       } else {
          static const enum op ext[5][2] = {
diff --git a/embedfilesdir.c b/embedfilesdir.c
index e2f223b..434e2e8 100644
--- a/embedfilesdir.c
+++ b/embedfilesdir.c
@@ -13,6 +13,7 @@ struct embedfile embedfilesdir[] = {
 typedef __typeof__((char*)0 - (char*)0) ptrdiff_t;\n\
 typedef __typeof__(sizeof 0) size_t;\n\
 /*typedef __typeof__(L'a') wchar_t;*/\n\
+typedef int wchar_t;\n\
 #define NULL ((void *)0)\n\
 #define offsetof(_Type, _Memb) ((size_t)(&((_Type *)0)->_Memb - (_Type *)0))\n\
 ")},
diff --git a/ir.c b/ir.c
index e0d219f..6c28977 100644
--- a/ir.c
+++ b/ir.c
@@ -58,6 +58,7 @@ irinit(struct function *fn)
       }
       type2cls[TYFLOAT] = KF4;
       type2cls[TYDOUBLE] = KF8;
+      type2cls[TYLDOUBLE] = KF8;
       type2cls[TYPTR] = KPTR;
       type2cls[TYARRAY] = KPTR;
       cls2siz[KI4] = cls2siz[KF4] = 4;
diff --git a/lex.c b/lex.c
index f99b8d3..2daa0bc 100644
--- a/lex.c
+++ b/lex.c
@@ -178,6 +178,9 @@ parsenumlit(uvlong *outi, double *outf, const struct token *tk, bool ispp)
       } else if ((suffix[0]|0x20) == 'f' && !suffix[1]) {
          if (outf) *outf = f;
          return TYFLOAT;
+      } else if ((suffix[0]|0x20) == 'l' && !suffix[1]) {
+         if (outf) *outf = f;
+         return TYLDOUBLE;
       }
       return 0;
    } else { /* int literal */
diff --git a/targ.c b/targ.c
index 7772537..306fcd8 100644
--- a/targ.c
+++ b/targ.c
@@ -6,16 +6,16 @@ static const struct targ {
    struct { uchar longsize, vlongsize, ptrsize, valistsize; };
    struct { uchar longalign, vlongalign, doublealign, ptralign; };
    bool charsigned;
-   uchar sizetype, ptrdifftype;
+   uchar sizetype, ptrdifftype, wchartype;
    const struct mctarg *mctarg;
 } targs[] = {
-   { "amd64-sysv", {8, 8, 8, 24}, {8, 8, 8, 8}, 1, TYULONG, TYLONG, &t_amd64_sysv },
-   { "i686-sysv",  {4, 8, 4,  8}, {4, 4, 4, 4}, 1, TYUINT, TYINT }
+   { "amd64-sysv", {8, 8, 8, 24}, {8, 8, 8, 8}, 1, TYULONG, TYLONG, TYUINT, &t_amd64_sysv },
+   { "i686-sysv",  {4, 8, 4,  8}, {4, 4, 4, 4}, 1, TYUINT,  TYINT,  TYUINT }
 };
 
 uchar targ_primsizes[TYPTR+1];
 uchar targ_primalign[TYPTR+1];
-enum typetag targ_sizetype, targ_ptrdifftype;
+enum typetag targ_sizetype, targ_ptrdifftype, targ_wchartype;
 bool targ_charsigned, targ_bigendian, targ_64bit;
 const struct mctarg *mctarg;
 
@@ -30,6 +30,7 @@ targ_init(const char *starg)
    sizes[TYUINT] = sizes[TYINT] = 4;
    sizes[TYFLOAT] = 4;
    sizes[TYDOUBLE] = 8;
+   sizes[TYLDOUBLE] = 8;
    memcpy(align, sizes, sizeof targ_primalign);
    sizes[TYULONG] = sizes[TYLONG] = t->longsize;
    sizes[TYUVLONG] = sizes[TYVLONG] = t->vlongsize;
@@ -38,9 +39,11 @@ targ_init(const char *starg)
    align[TYULONG] = align[TYLONG] = t->longalign;
    align[TYUVLONG] = align[TYVLONG] = t->vlongalign;
    align[TYDOUBLE] = t->doublealign;
+   align[TYLDOUBLE] = t->doublealign;
    align[TYVALIST] = align[TYPTR] = t->ptralign;
    targ_sizetype = t->sizetype;
    targ_ptrdifftype = t->ptrdifftype;
+   targ_wchartype = t->wchartype;
    targ_charsigned = t->charsigned;
    targ_bigendian = 0;
    targ_64bit = t->ptrsize == 8;
diff --git a/type.c b/type.c
index 724c337..b93a654 100644
--- a/type.c
+++ b/type.c
@@ -1,5 +1,4 @@
 #include "common.h"
-#include <string.h>
 
 struct typedata typedata[1<<13];
 const char *ttypenames[1<<10];
-- 
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