Fixed bug #985.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@13685 27425a3e-05d8-49a3-a47f-9c15f0e5edd8

os/common/ports/ARMCMx/chcore_v6m.h

@@ -128,9 +128,14 @@
 
 /* Handling a GCC problem impacting ARMv6-M.*/
 #if defined(__GNUC__) && !defined(PORT_IGNORE_GCC_VERSION_CHECK)
-#if __GNUC__ > 5
-#warning "This compiler has a know problem with Cortex-M0, see bugs: 88167, 88656."
-#warning "*** Use GCC version 5 or below ***"
+#if ( __GNUC__ > 5 ) && ( __GNUC__ < 10 )
+#define GCC_VERSION ( __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ )
+#if ( __GNUC__ == 7 ) && ( GCC_VERSION >= 70500 )
+#elif ( __GNUC__ == 8 ) && ( GCC_VERSION >= 80400 )
+#elif ( __GNUC__ == 9 ) && ( GCC_VERSION >= 90300 )
+#else
+#warning "This compiler has a know problem with Cortex-M0, see GCC bugs: 88167, 88656."
+#endif
 #endif
 #endif
 

readme.txt

@@ -93,6 +93,8 @@
        MEMS Accelerometers.
 - NEW: Safer messages mechanism for sandboxes (to be backported to 20.3.1).
 - NEW: Added latency measurement test application.
+- FIX: Fixed GCC6 problem breaks Cortex-M0 port (bug #985)
+       (backported to 20.3.2)(backported to 19.1.5).
 - FIX: Fixed a wrong management of the SPI TX buffer in the ADUCM port 
        (bug #1103)(backported to 20.3.2).
 - FIX: Fixed STM32F4 EFL sector bug (bug #1102)