target/arm/m_helper: Silence GCC 10 maybe-uninitialized error

When building with GCC 10.2 configured with --extra-cflags=-Os, we get:

target/arm/m_helper.c: In function ‘arm_v7m_cpu_do_interrupt’:
target/arm/m_helper.c:1811:16: error: ‘restore_s16_s31’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
1811 | if (restore_s16_s31) {
| ^
target/arm/m_helper.c:1350:10: note: ‘restore_s16_s31’ was declared here
1350 | bool restore_s16_s31;
| ^~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Initialize the 'restore_s16_s31' variable to silence the warning.

Backports 0ae4f11ee57350dac0e705ba79516310400ff43c
This commit is contained in:
Philippe Mathieu-Daudé 2021-03-04 15:16:24 -05:00 committed by Lioncash
parent 0636518de4
commit d36a968f8e

View file

@ -1266,7 +1266,7 @@ static void do_v7m_exception_exit(ARMCPU *cpu)
bool exc_secure = false; bool exc_secure = false;
bool return_to_secure; bool return_to_secure;
bool ftype; bool ftype;
bool restore_s16_s31; bool restore_s16_s31 = false;
/* /*
* If we're not in Handler mode then jumps to magic exception-exit * If we're not in Handler mode then jumps to magic exception-exit