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-rw-r--r--libc/misc/assert/__assert.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/libc/misc/assert/__assert.c b/libc/misc/assert/__assert.c
index 26bcc6516..74b5ee86f 100644
--- a/libc/misc/assert/__assert.c
+++ b/libc/misc/assert/__assert.c
@@ -46,21 +46,27 @@ extern const char *__progname;
#if 1
+static int in_assert; /* bss inits to 0. */
+
void __assert(const char *assertion, const char * filename,
int linenumber, register const char * function)
{
- fprintf(stderr,
+ if (!in_assert) {
+ in_assert = 1;
+
+ fprintf(stderr,
#ifdef ASSERT_SHOW_PROGNAME
- "%s: %s: %d: %s: Assertion `%s' failed.\n", __progname,
+ "%s: %s: %d: %s: Assertion `%s' failed.\n", __progname,
#else
- "%s: %d: %s: Assertion `%s' failed.\n",
+ "%s: %d: %s: Assertion `%s' failed.\n",
#endif
- filename,
- linenumber,
- /* Function name isn't available with some compilers. */
- ((function == NULL) ? "?function?" : function),
- assertion
- );
+ filename,
+ linenumber,
+ /* Function name isn't available with some compilers. */
+ ((function == NULL) ? "?function?" : function),
+ assertion
+ );
+ }
abort();
}