diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches/470_alloc.patch | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/debian/patches/470_alloc.patch b/debian/patches/470_alloc.patch new file mode 100644 index 0000000..b7cae1a --- /dev/null +++ b/debian/patches/470_alloc.patch @@ -0,0 +1,151 @@ +Subject: Add overflow detection (still support <C99) +From: Scarlett <scarlett@xavin.net>, Tatsuya Kinoshita <tats@debian.org> +Origin: http://marc.info/?l=openbsd-ports&m=142090828929750&w=2 + +diff --git a/alloc.h b/alloc.h +new file mode 100644 +index 0000000..fa0d391 +--- /dev/null ++++ b/alloc.h +@@ -0,0 +1,39 @@ ++/* ++ * by Scarlett. public domain. ++ * replacements for w3m's allocation macros which add overflow ++ * detection and concentrate the macros in one file ++ */ ++#ifndef W3_ALLOC_H ++#define W3_ALLOC_H ++#include <gc.h> ++#include <stdlib.h> ++#include <stdio.h> ++#include <limits.h> ++ ++static inline size_t ++z_mult_no_oflow_(size_t n, size_t size) ++{ ++ if (size != 0 && n > ULONG_MAX / size) { ++ fprintf(stderr, ++ "w3m: overflow in malloc, %lu*%lu\n", (unsigned long)n, (unsigned long)size); ++ exit(1); ++ } ++ return n * size; ++} ++ ++#define New(type) \ ++ (GC_MALLOC(sizeof(type))) ++ ++#define NewAtom(type) \ ++ (GC_MALLOC_ATOMIC(sizeof(type))) ++ ++#define New_N(type, n) \ ++ (GC_MALLOC(z_mult_no_oflow_((n), sizeof(type)))) ++ ++#define NewAtom_N(type, n) \ ++ (GC_MALLOC_ATOMIC(z_mult_no_oflow_((n), sizeof(type)))) ++ ++#define New_Reuse(type, ptr, n) \ ++ (GC_REALLOC((ptr), z_mult_no_oflow_((n), sizeof(type)))) ++ ++#endif /* W3_ALLOC_H */ +diff --git a/indep.h b/indep.h +index 84416ed..2809832 100644 +--- a/indep.h ++++ b/indep.h +@@ -1,7 +1,7 @@ + /* $Id: indep.h,v 1.16 2003/09/22 21:02:19 ukai Exp $ */ + #ifndef INDEP_H + #define INDEP_H +-#include <gc.h> ++#include "alloc.h" + #include "Str.h" + #include "config.h" + +@@ -92,11 +92,6 @@ extern char *w3m_etc_dir(); + extern char *w3m_conf_dir(); + extern char *w3m_help_dir(); + +-#define New(type) ((type*)GC_MALLOC(sizeof(type))) +-#define NewAtom(type) ((type*)GC_MALLOC_ATOMIC(sizeof(type))) +-#define New_N(type,n) ((type*)GC_MALLOC((n)*sizeof(type))) +-#define NewAtom_N(type,n) ((type*)GC_MALLOC_ATOMIC((n)*sizeof(type))) +-#define New_Reuse(type,ptr,n) ((type*)GC_REALLOC((ptr),(n)*sizeof(type))) + #define NewWithoutGC(type) ((type*)xmalloc(sizeof(type))) + #define NewWithoutGC_N(type,n) ((type*)xmalloc((n)*sizeof(type))) + #define NewWithoutGC_Reuse(type,ptr,n) ((type*)xrealloc(ptr,(n)*sizeof(type))) +diff --git a/libwc/charset.c b/libwc/charset.c +index 3f0b74d..ea79b1c 100644 +--- a/libwc/charset.c ++++ b/libwc/charset.c +@@ -1,8 +1,7 @@ + + #include <stdlib.h> + #include <ctype.h> +-#include <gc.h> +-#define New_N(type,n) ((type*)GC_MALLOC((n)*sizeof(type))) ++#include "../alloc.h" + + #include "wc.h" + +diff --git a/libwc/status.c b/libwc/status.c +index d25c924..4a2ebf8 100644 +--- a/libwc/status.c ++++ b/libwc/status.c +@@ -1,7 +1,6 @@ + + #include <string.h> +-#include <gc.h> +-#define New_N(type,n) ((type*)GC_MALLOC((n)*sizeof(type))) ++#include "../alloc.h" + + #include "wc.h" + #ifdef USE_UNICODE +diff --git a/main.c b/main.c +index 76256d6..d37b243 100644 +--- a/main.c ++++ b/main.c +@@ -383,6 +383,13 @@ make_optional_header_string(char *s) + return hs; + } + ++static void * ++die_oom(size_t bytes) ++{ ++ fprintf(stderr, "Out of memory: %lu bytes unavailable!\n", (unsigned long)bytes); ++ exit(1); ++} ++ + int + main(int argc, char **argv, char **envp) + { +@@ -412,6 +419,7 @@ main(int argc, char **argv, char **envp) + char **getimage_args = NULL; + #endif /* defined(DONT_CALL_GC_AFTER_FORK) && defined(USE_IMAGE) */ + GC_INIT(); ++ GC_set_oom_fn(die_oom); + #if defined(ENABLE_NLS) || (defined(USE_M17N) && defined(HAVE_LANGINFO_CODESET)) + setlocale(LC_ALL, ""); + #endif +diff --git a/matrix.c b/matrix.c +index 64fd0ad..bc7a5be 100644 +--- a/matrix.c ++++ b/matrix.c +@@ -34,18 +34,12 @@ + + #include "config.h" + #include "matrix.h" +-#include <gc.h> ++#include "alloc.h" + + /* + * Macros from "fm.h". + */ + +-#define New(type) ((type*)GC_MALLOC(sizeof(type))) +-#define NewAtom(type) ((type*)GC_MALLOC_ATOMIC(sizeof(type))) +-#define New_N(type,n) ((type*)GC_MALLOC((n)*sizeof(type))) +-#define NewAtom_N(type,n) ((type*)GC_MALLOC_ATOMIC((n)*sizeof(type))) +-#define Renew_N(type,ptr,n) ((type*)GC_REALLOC((ptr),(n)*sizeof(type))) +- + #define SWAPD(a,b) { double tmp = a; a = b; b = tmp; } + #define SWAPI(a,b) { int tmp = a; a = b; b = tmp; } + |