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Subject[RFC PATCH 2/7] kconfig: add xrealloc() helper
Date
We have xmalloc(), xcalloc() already.  Add xrealloc() as well to save
tedious error handling.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

scripts/kconfig/confdata.c | 2 +-
scripts/kconfig/lkc.h | 1 +
scripts/kconfig/nconf.gui.c | 2 +-
scripts/kconfig/symbol.c | 2 +-
scripts/kconfig/util.c | 11 ++++++++++-
scripts/kconfig/zconf.l | 2 +-
6 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index f792739..5c12dc9 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -201,7 +201,7 @@ static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
if (new_size > *n) {
new_size += LINE_GROWTH - 1;
new_size *= 2;
- nline = realloc(*lineptr, new_size);
+ nline = xrealloc(*lineptr, new_size);
if (!nline)
return -1;

diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 16cb62b..4e23feb 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -114,6 +114,7 @@ struct file *file_lookup(const char *name);
int file_write_dep(const char *name);
void *xmalloc(size_t size);
void *xcalloc(size_t nmemb, size_t size);
+void *xrealloc(void *p, size_t size);

struct gstr {
size_t len;
diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c
index a64b1c3..93e3d0c 100644
--- a/scripts/kconfig/nconf.gui.c
+++ b/scripts/kconfig/nconf.gui.c
@@ -374,7 +374,7 @@ int dialog_inputbox(WINDOW *main_window,

if (strlen(init)+1 > *result_len) {
*result_len = strlen(init)+1;
- *resultp = result = realloc(result, *result_len);
+ *resultp = result = xrealloc(result, *result_len);
}

/* find the widest line of msg: */
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index c9123ed..bc3ec6a 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -938,7 +938,7 @@ const char *sym_expand_string_value(const char *in)
newlen = strlen(res) + strlen(symval) + strlen(src) + 1;
if (newlen > reslen) {
reslen = newlen;
- res = realloc(res, reslen);
+ res = xrealloc(res, reslen);
}

strcat(res, symval);
diff --git a/scripts/kconfig/util.c b/scripts/kconfig/util.c
index 0e76042..01ead28 100644
--- a/scripts/kconfig/util.c
+++ b/scripts/kconfig/util.c
@@ -104,7 +104,7 @@ void str_append(struct gstr *gs, const char *s)
if (s) {
l = strlen(gs->s) + strlen(s) + 1;
if (l > gs->len) {
- gs->s = realloc(gs->s, l);
+ gs->s = xrealloc(gs->s, l);
gs->len = l;
}
strcat(gs->s, s);
@@ -145,3 +145,12 @@ void *xcalloc(size_t nmemb, size_t size)
fprintf(stderr, "Out of memory.\n");
exit(1);
}
+
+void *xrealloc(void *p, size_t size)
+{
+ p = realloc(p, size);
+ if (p)
+ return p;
+ fprintf(stderr, "Out of memory.\n");
+ exit(1);
+}
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index 07e074d..0bc43db 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -52,7 +52,7 @@ static void append_string(const char *str, int size)
if (new_size > text_asize) {
new_size += START_STRSIZE - 1;
new_size &= -START_STRSIZE;
- text = realloc(text, new_size);
+ text = xrealloc(text, new_size);
text_asize = new_size;
}
memcpy(text + text_size, str, size);
--
2.7.4
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