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Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8263298	16.0.2	Andrew Hughes	P4	Resolved	Fixed	b01
JDK-8263047	16.0.1	Andrew Hughes	P4	Resolved	Fixed	b08
JDK-8263046	13.0.7	Andrew Hughes	P4	Resolved	Fixed	b03
JDK-8261786	11.0.11	Andrew Hughes	P4	Resolved	Fixed	b03

The latest GCC fails if -fcf-protection is used with an x86 target that doesn't support CMOV:

https://gcc.gnu.org/git/?p=gcc.git;a=blobdiff;f=gcc/config/i386/i386-options.c;h=a70f6edf7b0bfa6994db372c2507dbacb5526646;hp=6819a04238965f0ad63b10323823caa2fb8b147c;hb=77d372abec0fbf2cfe922e3140ee3410248f979e;hpb=5ebdd53534db25401473db5f6a0ad30f41410241

At least back to OpenJDK 11, the JDK build forces -march=i586 and the build fails with '-fcf-protection is not compatible with this target'

I've successfully tested a patch which uses -march=i686 instead if -fcf-protection is detected in the compiler flags.

backported by

JDK-8261786 x86 32-bit build fails when -fcf-protection is passed in the compiler flags

JDK-8263046 x86 32-bit build fails when -fcf-protection is passed in the compiler flags

JDK-8263047 x86 32-bit build fails when -fcf-protection is passed in the compiler flags

JDK-8263298 x86 32-bit build fails when -fcf-protection is passed in the compiler flags

relates to

JDK-8039426 gcc can target wrong instruction set when building JDK native code

links to

Commit openjdk/jdk13u-dev/b8d5fcbe

Commit openjdk/jdk16u/189fe433

Commit openjdk/jdk/07851474

Review openjdk/jdk13u-dev/140

Review openjdk/jdk16u/74

Review openjdk/jdk/2153

(6 links to)