From 71af21899218236439dceca44f63c6247420c3f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C8=98tefan=20Talpalaru?= <stefantalpalaru@yahoo.com>
Date: Mon, 26 Apr 2021 19:59:32 +0200
Subject: [PATCH] skip internal functions like "raiseExceptionEx.constprop.0"

---
 libbacktrace.nimble    |  2 +-
 libbacktrace_wrapper.c | 12 +++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/libbacktrace.nimble b/libbacktrace.nimble
index 6e16466..39e7aca 100644
--- a/libbacktrace.nimble
+++ b/libbacktrace.nimble
@@ -9,7 +9,7 @@
 mode = ScriptMode.Verbose
 
 packageName   = "libbacktrace"
-version       = "0.0.6"
+version       = "0.0.7"
 author        = "Status Research & Development GmbH"
 description   = "Nim wrapper for libbacktrace"
 license       = "MIT or Apache License 2.0"
diff --git a/libbacktrace_wrapper.c b/libbacktrace_wrapper.c
index db525c1..b354440 100644
--- a/libbacktrace_wrapper.c
+++ b/libbacktrace_wrapper.c
@@ -112,6 +112,16 @@ static int strings_equal(const char *str1, const char *str2)
 	}
 }
 
+static int string_starts_with(const char *str1, const char *str2)
+{
+	if (!str1 || !str2) {
+		return 0;
+	} else {
+		size_t len2 = strlen(str2);
+		return strlen(str1) >= len2 && strncmp(str1, str2, len2) == 0;
+	}
+}
+
 #ifdef __cplusplus
 # include <cxxabi.h>
 #endif // __cplusplus
@@ -186,7 +196,7 @@ static int success_callback(void *data, uintptr_t pc __attribute__((unused)),
 			strings_equal(demangled_function, "rawWriteStackTrace") ||
 			strings_equal(demangled_function, "writeStackTrace") ||
 			strings_equal(demangled_function, "raiseExceptionAux") ||
-			strings_equal(demangled_function, "raiseExceptionEx")) {
+			string_starts_with(demangled_function, "raiseExceptionEx")) {
 		if (!debug) {
 			xfree(demangled_function);
 			return 0; // Skip it, but continue the backtrace.