Add support for V_4B so we can properly reject it.

[external/binutils.git] / include / libiberty.h

diff --git a/include/libiberty.h b/include/libiberty.h
index 8f7d5f6..a0cbbcf 100644 (file)
--- a/include/libiberty.h
+++ b/include/libiberty.h
@@ -1,6 +1,6 @@
 /* Function declarations for libiberty.
 
-   Copyright (C) 1997-2016 Free Software Foundation, Inc.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
    
    Note - certain prototypes declared in this header file are for
    functions whoes implementation copyright does not belong to the
@@ -397,6 +397,17 @@ extern void hex_init (void);
 /* Save files used for communication between processes.  */
 #define PEX_SAVE_TEMPS         0x4
 
+/* Max number of alloca bytes per call before we must switch to malloc.
+
+   ?? Swiped from gnulib's regex_internal.h header.  Is this actually
+   the case?  This number seems arbitrary, though sane.
+
+   The OS usually guarantees only one guard page at the bottom of the stack,
+   and a page size can be as small as 4096 bytes.  So we cannot safely
+   allocate anything larger than 4096 bytes.  Also care for the possibility
+   of a few compiler-allocated temporary stack slots.  */
+#define MAX_ALLOCA_SIZE        4032
+
 /* Prepare to execute one or more programs, with standard output of
    each program fed to standard input of the next.
    FLAGS       As above.
@@ -713,7 +724,7 @@ extern void *C_alloca (size_t) ATTRIBUTE_MALLOC;
 # define ASTRDUP(X) \
   (__extension__ ({ const char *const libiberty_optr = (X); \
    const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
-   char *const libiberty_nptr = (char *const) alloca (libiberty_len); \
+   char *const libiberty_nptr = (char *) alloca (libiberty_len); \
    (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
 #else
 # define alloca(x) C_alloca(x)