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authorWaldemar Brodkorb <wbx@openadk.org>2015-12-06 18:05:32 +0100
committerWaldemar Brodkorb <wbx@openadk.org>2015-12-09 07:50:59 +0100
commit5a233790c38323afaed5ede000e1ef1234755ad7 (patch)
treef674e420e0871491e1dad7bf584226fffdfaf5d1 /test/malloc/tst-asprintf.c
parentb6af57f98021bc3b1b8183cfb501a5c45293cdd7 (diff)
Reduce the initial buffer size for open_memstream
Reduce the initial buffer size for open_memstream (used by vasprintf), as most strings are usually smaller than that. Realloc the buffer after finishing the string to further reduce size. Problem appears in case of UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y, see http://dev.openwrt.org/ticket/13024 Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com> Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Diffstat (limited to 'test/malloc/tst-asprintf.c')
-rw-r--r--test/malloc/tst-asprintf.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/test/malloc/tst-asprintf.c b/test/malloc/tst-asprintf.c
new file mode 100644
index 000000000..d4c3f7676
--- /dev/null
+++ b/test/malloc/tst-asprintf.c
@@ -0,0 +1,27 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <malloc.h>
+
+static void my_stats(void)
+{
+ malloc_stats();
+ fprintf(stderr, "\n");
+}
+
+int main(int argc, char *argv[])
+{
+ char *a, *b;
+
+ my_stats();
+ asprintf(&b, "asdsadasd %ssdf\n", "AAAA");
+ my_stats();
+ asprintf(&a, "asdsadasd %ssdf\n", "AAAA");
+ my_stats();
+ free(a);
+ free(b);
+ my_stats();
+
+ return 0;
+}