libbb: new function bb_die_memory_exhausted

function                                             old     new   delta
bb_die_memory_exhausted                                -      10     +10
xstrdup                                               28      23      -5
xsetenv                                               27      22      -5
xrealloc                                              32      27      -5
xputenv                                               22      17      -5
xmalloc                                               30      25      -5
xfdopen_helper                                        40      35      -5
xasprintf                                             44      39      -5
wget_main                                           2387    2382      -5
open_socket                                           54      49      -5
glob_brace                                           419     414      -5
bb_get_chunk_from_file                               146     141      -5
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/11 up/down: 10/-55)           Total: -45 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

7 files changed, 32 insertions, 26 deletions

diff --git a/archival/libarchive/data_extract_to_command.c b/archival/libarchive/data_extract_to_command.c
index 1114a95cb..0fcabb4a9 100644
--- a/archival/libarchive/data_extract_to_command.c
+++ b/archival/libarchive/data_extract_to_command.c
@@ -37,7 +37,7 @@ static const char *const tar_var[] = {
 static void xputenv(char *str)
 {
 	if (putenv(str))
-		bb_error_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 }
 
 static void str2env(char *env[], int idx, const char *str)
diff --git a/include/libbb.h b/include/libbb.h
index 309c58734..ad1c7346f 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1277,20 +1277,21 @@ extern smallint syslog_level;
 extern smallint logmode;
 extern uint8_t xfunc_error_retval;
 extern void (*die_func)(void);
-extern void xfunc_die(void) NORETURN FAST_FUNC;
-extern void bb_show_usage(void) NORETURN FAST_FUNC;
-extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
-extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
-extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
-extern void bb_simple_perror_msg(const char *s) FAST_FUNC;
-extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
-extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC;
-extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
-extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
-extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC;
-extern void bb_perror_nomsg(void) FAST_FUNC;
-extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC;
-extern void bb_logenv_override(void) FAST_FUNC;
+void xfunc_die(void) NORETURN FAST_FUNC;
+void bb_show_usage(void) NORETURN FAST_FUNC;
+void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
+void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
+void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
+void bb_simple_perror_msg(const char *s) FAST_FUNC;
+void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
+void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC;
+void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
+void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
+void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC;
+void bb_perror_nomsg(void) FAST_FUNC;
+void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC;
+void bb_die_memory_exhausted(void) NORETURN FAST_FUNC;
+void bb_logenv_override(void) FAST_FUNC;
 
 /* We need to export XXX_main from libbusybox
  * only if we build "individual" binaries
diff --git a/libbb/get_line_from_file.c b/libbb/get_line_from_file.c
index d10066937..f3d6c6203 100644
--- a/libbb/get_line_from_file.c
+++ b/libbb/get_line_from_file.c
@@ -20,7 +20,7 @@ char* FAST_FUNC bb_get_chunk_from_file(FILE *file, size_t *end)
 		/* grow the line buffer as necessary */
 		if (!(idx & 0xff)) {
 			if (idx == ((size_t)-1) - 0xff)
-				bb_error_msg_and_die(bb_msg_memory_exhausted);
+				bb_die_memory_exhausted();
 			linebuf = xrealloc(linebuf, idx + 0x100);
 		}
 		linebuf[idx++] = (char) ch;
diff --git a/libbb/wfopen.c b/libbb/wfopen.c
index 20fe18b23..1c7f7f3d7 100644
--- a/libbb/wfopen.c
+++ b/libbb/wfopen.c
@@ -42,7 +42,7 @@ static FILE* xfdopen_helper(unsigned fd_and_rw_bit)
 {
 	FILE* fp = fdopen(fd_and_rw_bit >> 1, fd_and_rw_bit & 1 ? "w" : "r");
 	if (!fp)
-		bb_error_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 	return fp;
 }
 FILE* FAST_FUNC xfdopen_for_read(int fd)
diff --git a/libbb/xfuncs_printf.c b/libbb/xfuncs_printf.c
index 2bc01ad10..7247c915b 100644
--- a/libbb/xfuncs_printf.c
+++ b/libbb/xfuncs_printf.c
@@ -25,6 +25,11 @@
  * fail, so callers never need to check for errors.  If it returned, it
  * succeeded. */
 
+void FAST_FUNC bb_die_memory_exhausted(void)
+{
+	bb_error_msg_and_die(bb_msg_memory_exhausted);
+}
+
 #ifndef DMALLOC
 /* dmalloc provides variants of these that do abort() on failure.
  * Since dmalloc's prototypes overwrite the impls here as they are
@@ -44,7 +49,7 @@ void* FAST_FUNC xmalloc(size_t size)
 {
 	void *ptr = malloc(size);
 	if (ptr == NULL && size != 0)
-		bb_error_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 	return ptr;
 }
 
@@ -55,7 +60,7 @@ void* FAST_FUNC xrealloc(void *ptr, size_t size)
 {
 	ptr = realloc(ptr, size);
 	if (ptr == NULL && size != 0)
-		bb_error_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 	return ptr;
 }
 #endif /* DMALLOC */
@@ -79,7 +84,7 @@ char* FAST_FUNC xstrdup(const char *s)
 	t = strdup(s);
 
 	if (t == NULL)
-		bb_error_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 
 	return t;
 }
@@ -327,14 +332,14 @@ char* FAST_FUNC xasprintf(const char *format, ...)
 	va_end(p);
 
 	if (r < 0)
-		bb_error_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 	return string_ptr;
 }
 
 void FAST_FUNC xsetenv(const char *key, const char *value)
 {
 	if (setenv(key, value, 1))
-		bb_error_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 }
 
 /* Handles "VAR=VAL" strings, even those which are part of environ
diff --git a/networking/wget.c b/networking/wget.c
index 8969310a4..12ee29a6f 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -409,7 +409,7 @@ static FILE *open_socket(len_and_sockaddr *lsa)
 	/* hopefully it understands what ESPIPE means... */
 	fp = fdopen(fd, "r+");
 	if (!fp)
-		bb_perror_msg_and_die(bb_msg_memory_exhausted);
+		bb_die_memory_exhausted();
 
 	return fp;
 }
@@ -1114,7 +1114,7 @@ static void download_one_url(const char *url)
 # endif
 			sfp = fdopen(fd, "r+");
 			if (!sfp)
-				bb_perror_msg_and_die(bb_msg_memory_exhausted);
+				bb_die_memory_exhausted();
 			goto socket_opened;
 		}
 		sfp = open_socket(lsa);
diff --git a/shell/hush.c b/shell/hush.c
index 1921932d1..8246b5fd8 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -3158,7 +3158,7 @@ static int glob_brace(char *pattern, o_string *o, int n)
 				return o_save_ptr_helper(o, n);
 			}
 			if (gr == GLOB_NOSPACE)
-				bb_error_msg_and_die(bb_msg_memory_exhausted);
+				bb_die_memory_exhausted();
 			/* GLOB_ABORTED? Only happens with GLOB_ERR flag,
 			 * but we didn't specify it. Paranoia again. */
 			bb_error_msg_and_die("glob error %d on '%s'", gr, pattern);
@@ -3260,7 +3260,7 @@ static int perform_glob(o_string *o, int n)
 			goto literal;
 		}
 		if (gr == GLOB_NOSPACE)
-			bb_error_msg_and_die(bb_msg_memory_exhausted);
+			bb_die_memory_exhausted();
 		/* GLOB_ABORTED? Only happens with GLOB_ERR flag,
 		 * but we didn't specify it. Paranoia again. */
 		bb_error_msg_and_die("glob error %d on '%s'", gr, pattern);