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Robert Griesemer e052044d6b go/types, types2: better error messages for comparisons 
Refactor Checker.comparison such that its logic is easier to reason
about and so that special cases can be handled more directly.

Use the appropriate operand (of 1st or 2nd operand) for error
reporting (position and type), rather than always using the
first operand.

Use an extra parameter to indicate a switch case
comparison; in this case the error is always reported at
the position of the first operand. (The error messages are
not yet adjusted for switches; see next CL.)

Introduce a new kindString function which is used to print simplified
types in error messages (related to comparisons only): instead of
printing the details of a struct type, we just print "struct" where
the details are not relevant. This matches the 1.17 compiler behavior.

Added a "reportf" parameter to the internal comparable function so we
can report an error cause in addition to the boolean result. Rather
than passing a *string for cause, we pass a function to record the
cause so that we can use the *Checker context for printing (needed
for proper type qualification). This mechanism reports the same
details now as the 1.17 compiler.

Adjusted various tests as needed added new test files.

Fixes #50918.

Change-Id: I1f0e7af22f09db4d31679c667c71a9038a8dc9d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/381964
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
 		2022-02-04 23:42:25 +00:00
..
abi cmd/compile: restore tail call for method wrappers 2021-09-17 22:59:44 +00:00
alias3.dir
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asmhdr.dir cmd/compile: use exact constant in go_asm.h 2022-01-10 21:27:19 +00:00
bench
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chan
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closure3.dir cmd/compile/internal/inline: revise closure inl position fix 2021-11-24 15:55:56 +00:00
closure5.dir
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codegen test/codegen: updated arithmetic tests to verify on ppc64,ppc64le 2021-11-01 13:12:37 +00:00
ddd2.dir
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dwarf
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fixedbugs go/types, types2: better error messages for comparisons 2022-02-04 23:42:25 +00:00
import2.dir
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import4.dir
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interface cmd/compile: match Go 1.17 compiler error messages more closely 2021-11-12 23:07:01 +00:00
intrinsic.dir
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ken test/ken/slicearray.go: correct type width in comment 2021-12-05 12:50:44 +00:00
linkname.dir cmd/compile: allow inlining of ORANGE 2021-10-28 14:25:03 +00:00
method4.dir
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oldescape_linkname.dir
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retjmp.dir cmd/internal/obj: fix tail call in non-zero frame leaf function on MIPS and S390X 2021-12-13 22:42:08 +00:00
runtime
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stress
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syntax
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typeparam cmd/compile: restrict generics test to -G=3 2022-02-03 23:55:05 +00:00
uintptrescapes.dir
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64bit.go
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235.go
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README.md
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alg.go
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alias.go
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alias1.go
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alias2.go cmd/compile: match Go 1.17 compiler error messages more closely 2021-11-12 23:07:01 +00:00
alias3.go
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align.go
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append.go
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append1.go cmd/compile: match Go 1.17 compiler error messages more closely 2021-11-12 23:07:01 +00:00
args.go
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armimm.go
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asmhdr.go cmd/compile: emit sensible go_asm.h consts for big ints 2021-10-30 18:30:05 +00:00
assign.go
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assign1.go
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atomicload.go
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bigalg.go
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bigmap.go
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blank.go
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blank1.go
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bom.go
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bombad.go
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bounds.go
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cannotassign.go
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chancap.go
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chanlinear.go
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char_lit.go
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char_lit1.go
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checkbce.go
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clearfat.go
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closedchan.go
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closure.go
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closure1.go
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closure2.go
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closure3.go
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closure4.go
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closure5.go
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closure6.go
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closure7.go
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cmp.go
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cmp6.go
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cmplx.go
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cmplxdivide.c
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cmplxdivide.go
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cmplxdivide1.go
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complit.go
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complit1.go
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compos.go
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const.go
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const1.go
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const2.go
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const3.go
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const4.go
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const5.go
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const6.go
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const7.go
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convT2X.go
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convert.go
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convert1.go
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convert2.go
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convert3.go
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convert4.go
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convlit.go
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convlit1.go
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copy.go
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copy1.go
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crlf.go
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ddd.go
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ddd1.go cmd/compile: match Go 1.17 compiler error messages more closely 2021-11-12 23:07:01 +00:00
ddd2.go
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decl.go
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declbad.go
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defer.go
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defererrcheck.go
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deferfin.go
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defernil.go
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deferprint.go
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deferprint.out
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devirt.go
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directive.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
directive2.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
divide.go
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divmod.go
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embedfunc.go
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embedvers.go
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empty.go
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env.go
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eof.go
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eof1.go
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escape.go
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escape2.go
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escape2n.go
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escape3.go
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escape4.go
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escape5.go
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escape_array.go
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escape_calls.go
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escape_closure.go
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escape_field.go
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escape_goto.go
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escape_hash_maphash.go
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escape_iface.go
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escape_indir.go
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escape_level.go
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escape_map.go
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escape_param.go
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escape_runtime_atomic.go
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escape_selfassign.go
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escape_slice.go
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escape_struct_param1.go
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escape_struct_param2.go
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escape_struct_return.go
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escape_sync_atomic.go
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escape_unsafe.go
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fibo.go
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finprofiled.go
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float_lit.go
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float_lit2.go
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float_lit3.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
floatcmp.go
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for.go
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func.go
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func1.go
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func2.go
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func3.go
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func4.go
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func5.go
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func6.go
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func7.go
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func8.go
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funcdup.go
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funcdup2.go
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fuse.go
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gc.go
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gc1.go
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gc2.go
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gcgort.go
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gcstring.go
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goprint.go
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goprint.out
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goto.go
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heapsampling.go
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helloworld.go
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helloworld.out
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if.go
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import.go
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import1.go test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +00:00
import2.go
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import4.go
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import5.go
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import6.go test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +00:00
index.go
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index0.go
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index1.go
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index2.go
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indirect.go
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indirect1.go
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init.go
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init1.go
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initcomma.go
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initempty.go
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initexp.go
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initialize.go
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initializerr.go test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +00:00
initloop.go
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inline.go cmd/compile/internal/inline: revise closure inl position fix 2021-11-24 15:55:56 +00:00
inline_big.go
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inline_caller.go
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inline_callers.go
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inline_endian.go test: skip endian inlining test on noopt builder 2021-10-07 00:39:17 +00:00
inline_literal.go
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inline_math_bits_rotate.go
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inline_sync.go
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inline_variadic.go
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int_lit.go
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intcvt.go
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intrinsic.go
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intrinsic_atomic.go
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iota.go
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label.go
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label1.go
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linkmain.go
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linkmain_run.go
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linkname.go
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linkname2.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
linkname3.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
linkobj.go
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linkx.go
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linkx_run.go
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literal.go
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literal2.go
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live.go
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live1.go
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live2.go
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live_regabi.go
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live_syscall.go
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locklinear.go
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loopbce.go
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mainsig.go
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makechan.go
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makemap.go
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makenew.go
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makeslice.go
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mallocfin.go
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map.go
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map1.go
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mapclear.go
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maplinear.go
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maymorestack.go cmd/{asm,compile,internal/obj}: add "maymorestack" support 2021-11-05 00:52:06 +00:00
mergemul.go
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method.go
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method1.go
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method2.go go/types, types2: better error message when using *interface instead of interface 2022-01-10 22:48:40 +00:00
method3.go
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method4.go
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method5.go
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method6.go
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method7.go
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named.go
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named1.go
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nil.go
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nilcheck.go
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nilptr.go
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nilptr2.go
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nilptr3.go
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nilptr4.go
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nilptr5.go
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nilptr5_aix.go
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nilptr5_wasm.go
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nilptr_aix.go
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nosplit.go
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notinheap.go
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notinheap2.go
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notinheap3.go
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nowritebarrier.go
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nul1.go
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opt_branchlikely.go
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parentype.go
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peano.go
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phiopt.go
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print.go
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print.out
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printbig.go
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printbig.out
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prove.go
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range.go
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recover.go
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recover1.go
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recover2.go
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recover3.go
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recover4.go test/recover4.go: use mprotect to create a hole instead of munmap 2021-11-12 16:58:34 +00:00
recover5.go
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reflectmethod1.go
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reflectmethod2.go
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reflectmethod3.go
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reflectmethod4.go
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reflectmethod5.go
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reflectmethod6.go
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reflectmethod7.go all: use reflect.{Pointer,PointerTo} 2021-10-26 14:24:17 +00:00
reflectmethod8.go
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rename.go
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rename1.go
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reorder.go
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rotate.go
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rotate2.go
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rotate3.go
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run.go cmd/compile: support structural typing in unified IR 2022-01-27 00:03:31 +00:00
rune.go
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runtime.go
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shift1.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
shift2.go
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sieve.go
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sigchld.go
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sigchld.out
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simassign.go
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sinit.go
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sinit_run.go
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sizeof.go
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slice3.go
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slice3err.go
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slicecap.go
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sliceopt.go
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solitaire.go
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stack.go
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stackobj.go
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stackobj2.go
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stackobj3.go
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strcopy.go
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strength.go
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string_lit.go
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stringrange.go
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struct0.go
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switch.go
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switch2.go
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switch3.go
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switch4.go
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switch5.go
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switch6.go cmd/compile, types2: better error message for invalid type assertion 2021-10-19 17:01:35 +00:00
switch7.go
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tinyfin.go
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torture.go
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turing.go
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typecheck.go test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +00:00
typecheckloop.go
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typeswitch.go
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typeswitch1.go
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typeswitch2.go
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typeswitch2b.go
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typeswitch3.go cmd/compile/internal/types2: better error for type assertion/switch on type parameter value 2021-11-12 22:20:51 +00:00
uintptrescapes.go
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uintptrescapes2.go
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uintptrescapes3.go
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undef.go
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unsafebuiltins.go unsafe: allow unsafe.Slice up to end of address space 2021-10-13 18:15:16 +00:00
used.go
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utf.go
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varerr.go
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varinit.go
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winbatch.go
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writebarrier.go
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zerodivide.go all: use bytes.Cut, strings.Cut 2021-10-06 15:53:04 +00:00

README.md

The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.

To run just these tests, execute:

../bin/go run run.go

To run just tests from specified files in this directory, execute:

../bin/go run run.go -- file1.go file2.go ...

Standard library tests should be written as regular Go tests in the appropriate package.

The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:

  • it is most naturally expressed using the test runner; or
  • it is also applicable to gccgo and other Go tool chains.