From 5a233790c38323afaed5ede000e1ef1234755ad7 Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sun, 6 Dec 2015 18:05:32 +0100 Subject: 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 Signed-off-by: Leonid Lisovskiy Signed-off-by: Waldemar Brodkorb --- test/malloc/tst-asprintf.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 test/malloc/tst-asprintf.c (limited to 'test') 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 +#include +#include +#include +#include + +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; +} -- cgit v1.2.3