[Bug target/48308] crosscompiling to arm fails with assembler: can't resolve '.LC4' {.rodata.str1.1 section} - '.LPIC4' {*UND* section}

[m.k.edwards at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48308

Michael K. Edwards <m.k.edwards at gmail dot com> changed:

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--- Comment #7 from Michael K. Edwards <m.k.edwards at gmail dot com> 2011-06-22 15:14:06 UTC ---
I hit this with Linaro GCC 4.6 (4.6.1-based) and the same pkeyparam.c from
OpenSSL.  I am also compiling with -Os and -fPIC, and implicitly with -mthumb
(the default in my toolchain); so it's not specific to ARM mode.

The situation appears to be that two pc-relative fetches (artifacts of -fPIC
and string literals) get folded together, losing one of the labels (needed for
calculation of the offset in the table of PIC indirections).

Reverting http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163998 makes the
problem go away, at least at compile time; I should be able to run a test suite
soon.