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Revert "Implement C99 Variable Length Arrays"

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This reverts commit a5a50eaafe.
This commit is contained in:
Thomas Preud'homme
2011-02-05 02:31:45 +01:00
parent 38f6467c06
commit db560e9439
6 changed files with 33 additions and 169 deletions
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16
tcc-doc.texi
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@ -929,11 +929,7 @@ be the best solution.
#define VT_BTYPE 0x000f /* mask for basic type */
#define VT_UNSIGNED 0x0010 /* unsigned type */
#define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */
#define VT_VLA 0x10000 /* VLA type (also has VT_PTR and VT_ARRAY) */
#define VT_BITFIELD 0x0040 /* bitfield modifier */
#define VT_CONSTANT 0x0800 /* const modifier */
#define VT_VOLATILE 0x1000 /* volatile modifier */
#define VT_SIGNED 0x2000 /* signed type */
#define VT_STRUCT_SHIFT 18 /* structure/enum name shift (14 bits left) */
@end example
@ -946,8 +942,7 @@ The @code{VT_UNSIGNED} flag can be set for chars, shorts, ints and long
longs.
Arrays are considered as pointers @code{VT_PTR} with the flag
@code{VT_ARRAY} set. Variable length arrays are considered as special
arrays and therefore also have flag @code{VT_VLA} set.
@code{VT_ARRAY} set.
The @code{VT_BITFIELD} flag can be set for chars, shorts, ints and long
longs. If it is set, then the bitfield position is stored from bits
@ -963,10 +958,6 @@ integer:
#define VT_EXTERN 0x00000080 /* extern definition */
#define VT_STATIC 0x00000100 /* static variable */
#define VT_TYPEDEF 0x00000200 /* typedef definition */
#define VT_INLINE 0x00000400 /* inline definition */
#define VT_IMPORT 0x00004000 /* win32: extern data imported from dll */
#define VT_EXPORT 0x00008000 /* win32: data exported from dll */
#define VT_WEAK 0x00010000 /* win32: data exported from dll */
@end example
@section Symbols
@ -978,10 +969,7 @@ contains @code{Sym} structures.
an idenfier is also a token, so a string is never necessary to store
it). @code{Sym.t} gives the type of the symbol. @code{Sym.r} is usually
the register in which the corresponding variable is stored. @code{Sym.c} is
usually a constant associated to the symbol like its address for normal
symbols, and the number of entries for symbols representing arrays.
Variable length arrays use @code{Sym.r} instead, which is a pointer to
a @code{SValue} holding its runtime size.
usually a constant associated to the symbol.
Four main symbol stacks are defined: