https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96450
--- Comment #1 from CVS Commits ---
The master branch has been updated by Ian Lance Taylor :
https://gcc.gnu.org/g:acf83db025cfd4a67724838e9dbd19813f4f5960
commit r11-2559-gacf83db025cfd4a67724838e9dbd19813f4f5960
Author: Ian Lance Taylor
Date: Mon Aug 3 18:23:39 2020 -0700
compiler: delete lowered constant strings
If we lower a constant string operation in a Binary_expression,
delete the strings. This is safe because constant strings are always
newly allocated.
This is a hack to use much less memory when compiling the new
time/tzdata package, which has a file that contains the sum of over
13,000 constant strings. We don't do this for numeric expressions
because that could cause us to delete an Iota_expression.
We should have a cleaner approach to memory usage some day.
Fixes PR go/96450