set_size only resets the end pointer and asserts if it is used to grow the buffer. This would crash when mangling a float with more than 80 bits, add a test with a ppc double double (128 bits). Found by inspection. llvm-svn: 243979
llvm-svn: 222408
Patch by Pierre Gousseau! Test cases altered significantly by me. llvm-svn: 222404