https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98209
Bug ID: 98209 Summary: printf failed with O1 or above Product: gcc Version: 9.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: jamesgua at ca dot ibm.com Target Milestone: --- Testing file: #include <stdio.h> int main(int argc, char** argv) __attribute__ ((__target__ ("no-sse,no-mmx"))); int main(int argc, char** argv) { printf("hello!\n"); return 0; } cmd to compile: gcc -O3 -c test.c On Ubuntu 20.04 (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) it failed with "inlining failed in call to always_inline printf’: target specific option mismatch" but it works on Ubuntu 16.04 (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12)) If not supported pls let me know.