Implementation notes: amd64, temp, crypto_hash/skinnyhashtk2

Computer: temp
Architecture: amd64
CPU ID: AuthenticAMD-00800f12-178bfbff
SUPERCOP version: 20191017
Operation: crypto_hash
Primitive: skinnyhashtk2

Compiler output

Implementation: ref
Security model: unknown
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE
skinny_hash.c: skinny_hash.c: In function 'xor_values':
skinny_hash.c: skinny_hash.c:124:5: error: 'for' loop initial declarations are only allowed in C99 mode
skinny_hash.c: for (int i=0; i<len; i++) {
skinny_hash.c: ^
skinny_hash.c: skinny_hash.c:124:5: note: use option -std=c99 or -std=gnu99 to compile your code

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE ref
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE ref
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE ref
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE ref