[nuttx] branch master updated: armv7-m irq: avoid uninitialized warning/error

[davids5]

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davids5 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git


The following commit(s) were added to refs/heads/master by this push:
     new d1113110f3 armv7-m irq: avoid uninitialized warning/error
d1113110f3 is described below

commit d1113110f336997ff73f892b5bdae54074efe2e1
Author: Matthias Grob <maet...@gmail.com>
AuthorDate: Mon Mar 20 19:53:46 2023 +0100

    armv7-m irq: avoid uninitialized warning/error
    
    arm-none-eabi-gcc 12.2.0 gives the following warnings:
    error: 'primask' is used uninitialized
    error: 'primask' may be used uninitialized
    
    We use Werror and the file is indirectly included in different
    places. I suggest telling the compiler to ignore these warnings
    since primask is initialized on the first assembly line.
    
    This is the only problem I encountered so far when upgrading the compiler.
---
 arch/arm/include/armv7-m/irq.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/include/armv7-m/irq.h b/arch/arm/include/armv7-m/irq.h
index 10bc465615..a3e467e3c5 100644
--- a/arch/arm/include/armv7-m/irq.h
+++ b/arch/arm/include/armv7-m/irq.h
@@ -359,6 +359,9 @@ static inline void raisebasepri(uint32_t basepri)
    *    effect of unconditionally re-enabling interrupts.
    */
 
+#pragma GCC diagnostic push /* primask is initialized in ASM */
+#pragma GCC diagnostic ignored "-Wuninitialized"
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
   __asm__ __volatile__
     (
      "\tmrs   %0, primask\n"
@@ -368,6 +371,7 @@ static inline void raisebasepri(uint32_t basepri)
      : "+r" (primask)
      : "r"  (basepri)
      : "memory");
+#pragma GCC diagnostic pop
 }
 #else
 #  define raisebasepri(b) setbasepri(b);