On Raspberry Pi, backtrace() returns 0 frames

I'm playing around with glibc's `backtrace()` and I can't seem to get it to work right on my Raspberry Pi. Everything compiles with no warnings, but `backtrace()` returns 0 as the number of frames stored. The exact same code does produce a backtrace on x86_64 (Debian stable), with `backtrace()` returning 6 frames: ``` /*test.c*/ #include <stdio.h> #include <execinfo.h> #include <unistd.h> void foo(void) { void *stack[10]; int n = backtrace(stack, 10); fprintf(stderr, "Last %d frames:\n", n); backtrace_symbols_fd(stack, n, STDERR_FILENO); } void bar(void) { foo(); } void baz(void) { bar(); } int main(void) { printf("Hello, Backtrace\n"); baz(); return 0; } ``` ``` #Makefile CFLAGS=-Wall -Wextra -g LDFLAGS=-rdynamic ``` Output on x86_64 (`gcc (Debian 4.7.2-5) 4.7.2` with GNU `libc6:amd64 2.13-38+deb7u1`): ``` Hello, Backtrace Last 6 frames: ./test(foo+0x19)[0x4009a5] ./test(bar+0x9)[0x4009e5] ./test(baz+0x9)[0x4009f0] ./test(main+0x13)[0x400a05] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd)[0x7f9286ddbead] ./test[0x4008a9] ``` Output on Raspberry Pi (`gcc (Debian 4.6.3-14+rpi1) 4.6.3` with GNU `libc6:armhf (2.13-38+rpi2+deb7u1)`): ``` Hello, Backtrace Last 0 frames: ``` I have verified that the compiled executable on Raspberry Pi is storing the frame pointer and link register to the stack. `objdump -d test` excerpt: ``` 0000882c <bar>: 882c: e92d4800 push {fp, lr} 8830: e28db004 add fp, sp, #4 8834: ebffffe3 bl 87c8 <foo> 8838: e8bd8800 pop {fp, pc} 0000883c <baz>: 883c: e92d4800 push {fp, lr} 8840: e28db004 add fp, sp, #4 8844: ebfffff8 bl 882c <bar> 8848: e8bd8800 pop {fp, pc} ``` I haven't found anything like this on the forums or Stack Overflow. Am I doing something wrong? What haven't I checked?