[Bug middle-end/92183] New: gcc tries to create a relocation in a mergeable section

[rafael at espindo dot la]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92183

            Bug ID: 92183
           Summary: gcc tries to create a relocation in a mergeable
                    section
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rafael at espindo dot la
  Target Milestone: ---

Given

struct foo {
  const char *bar;
  const char *zed;
};
void g(struct foo *r);
void f() {
  struct foo t = {"bar", "zed"};
  g(&t);
}


gcc -O3 produces

        .section        .rodata.str1.1,"aMS",@progbits,1
.LC0:
        .string "bar"
.LC1:
        .string "zed"

....

        .section        .rodata.cst8,"aM",@progbits,8
        .align 8
.LC2:
        .quad   .LC1


While it is not illegal to have a relocation in a mergeable section, I don't
know of any linker that supports that, so gcc is being over aggressive.