https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98366
Bug ID: 98366 Summary: [11 Regression] wrong-code with memcmp and -m32 Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: mpolacek at gcc dot gnu.org Target Milestone: --- struct S { int b; int alignment; int c : 7; int d : 8; } const e[] = {{.0, 3, '(', 2.0}}; typedef struct S S; int memcmp (const void *, const void *, __SIZE_TYPE__); int main () { _Bool b = (!memcmp(e, (S[]){{.alignment = 3, '(', 2.0}}, sizeof (S))); if (!b) __builtin_abort (); } with -m32 -O2 generates a binary that aborts. Started with r11-2709.