diff options
Diffstat (limited to 'include/libiberty.h')
| -rw-r--r-- | include/libiberty.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/libiberty.h b/include/libiberty.h index a9c885fc67..7a796124bf 100644 --- a/include/libiberty.h +++ b/include/libiberty.h @@ -1,6 +1,6 @@ /* Function declarations for libiberty. - Copyright (C) 1997-2015 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. |