detect alternative memory allocators and quit early

1 files changed, 10 insertions, 0 deletions

diff --git a/mutrace.c b/mutrace.c
index 069fd72..d5ddae2 100644
--- a/mutrace.c
+++ b/mutrace.c
@@ -35,6 +35,7 @@
 #include <sys/syscall.h>
 #include <unistd.h>
 #include <sys/prctl.h>
+#include <malloc.h>
 
 /* FIXMES:
  *
@@ -221,6 +222,15 @@ static void setup(void) {
         if (initialized)
                 return;
 
+        if (__malloc_hook) {
+                fprintf(stderr,
+                        "mutrace: Detected non-glibc memory allocator. Your program uses some\n"
+                        "mutrace: alternative memory allocator (jemalloc?) which is not compatible with\n"
+                        "mutrace: mutrace. Please rebuild your program with the standard memory\n"
+                        "mutrace: allocator or fix mutrace to handle yours correctly.\n");
+                real_exit(1);
+        }
+
         t = hash_size;
         if (parse_env("MUTRACE_HASH_SIZE", &t) < 0 || t <= 0)
                 fprintf(stderr, "mutrace: WARNING: Failed to parse $MUTRACE_HASH_SIZE.\n");