Unable to debug application when using library version 0.7.0

[wbuck]

First, I'am able to successfully flash the STM32F303x and run the application.
The issue I'm facing is attempting to debug the application with GDB/OpenOCD.

When issuing a cargo run I see the following messages (emphasis mine):

Reading symbols from target/thumbv7em-none-eabihf/debug/app...
DW_FORM_strp pointing outside of .debug_str section [in module /Users/Me/Projects/embedded_template/target/thumbv7em-none-eabihf/debug/app]

(No debugging symbols found in target/thumbv7em-none-eabihf/debug/app)

As a result I'am unable to set break points or use layout src in GDB.
This only occurs when using cortex-m version 0.7.0.

If I use version 0.6.4 I'am able to successfully debug the application.

Aside from the memory.x file is there additional configuration needed for the newest version of the library?
Are specific versions of the library only compatible with specific MCU's?
Does the version of the cortex-m library require a specific version of GDB?

Below is my memory.x file if it helps:

MEMORY
{
    CCRAM : ORIGIN = 0x10000000, LENGTH = 8K
    FLASH : ORIGIN = 0x08000000, LENGTH = 256K
    RAM : ORIGIN = 0x20000000, LENGTH = 40K
}
_stack_start = ORIGIN(CCRAM) + LENGTH(CCRAM);

[pozix604]

I'm able to reproduce.

[jonas-schievink]

This seems to be an upstream issue, it is fixed on nightly Rust versions.

EDIT: It only seems fixed when passing -Clinker-plugin-lto to the compiler

[wbuck]

OK great, thanks @jonas-schievink

[wbuck]

@jonas-schievink so to be clear if I pass -Clinker-plugin-lto to the compiler I should be able to use version 0.7? Or should I wait for version 0.7.1 to be released?

[adamgreig]

This is now fixed by the new 0.7.1 release (containing #318).

[adamgreig]

@jonas-schievink so to be clear if I pass -Clinker-plugin-lto to the compiler I should be able to use version 0.7? Or should I wait for version 0.7.1 to be released?

Hopefully 0.7.1 solves the issue! Thanks for reporting the bug, sorry we couldn't get it fixed sooner.