1477913 - Uninitialised value use in js::wasm::AstValType::code

Status: RESOLVED DUPLICATE of bug 1477329

(Core :: JavaScript: WebAssembly, defect)

Description

[Julian Seward [:jseward]]

Attachment: Testcase (testgcmap2.js)

STR:

(cd ../src && autoconf-2.13) && CC="ccache gcc" CXX="ccache g++" \
 ../src/configure   --enable-debug --enable-optimize="-g -Og" \
 --enable-valgrind --disable-jemalloc

(then build)

vTRUNK --track-origins=yes --px-default=allregs-at-mem-access \
  --px-file-backed=unwindregs-at-mem-access --fair-sched=yes \
  --fullpath-after=/MOZ/ --trace-children=yes --error-limit=no \
  --show-mismatched-frees=no ./dist/bin/js --no-wasm-ion --wasm-gc 
  ../../../MC-WASM/testgcmap2.js

Comment 1

[Julian Seward [:jseward]]

Attachment: Valgrind complaints

Comment 2

[Lars T Hansen [:lth]]

Let's fix bug 1477329 first and then try again.  I'll get that done today.

Comment 3

[Julian Seward [:jseward]]

It's not immediately clear to me what's going on.  It's complaining
about |if (which_ == IsValType)| in AstValType::code(), which is a 
bit surprising given that all of the constructors set |which_|.