https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89752
--- Comment #4 from Wilco <wilco at gcc dot gnu.org> --- Small example which generates the same ICE on every GCC version: typedef struct { int x, y, z; } X; void f(void) { X A0, A1; __asm__ ("" : [a0] "+rm" (A0),[a1] "+rm" (A1)); } So it's completely invalid inline asm...