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  1. 01 Mar, 2016 1 commit
    • littledan's avatar
      Make RUNTIME_ASSERT have more useful output in debug mode · 78d84530
      littledan authored 
      Runtime asserts are were previously a bit annoying to debug, due to
the lack of a useful error message, even in debug mode. This patch
prints out some more information in debug mode for runtime assert
failures while preserving their exception-throwing semantics. While
we're at it, it requires a semicolon after RUNTIME_ASSERT macro
invocations.

```
$ rlwrap out/Debug/d8 --allow-natives-syntax
V8 version 5.1.0 (candidate)
d8> %ArrayBufferNeuter(1)

#
# Runtime error in ../../src/runtime/runtime-typedarray.cc, line 52
#
# args[0]->IsJSArrayBuffer()

==== C stack trace ===============================

 1: 0xf70ab5
 2: 0xadeebf
 3: 0xadedd4
 4: 0x2ef17630693b
(d8):1: illegal access
%ArrayBufferNeuter(1)
^

d8>
```

Also give the other 'illegal access' case (a special SyntaxError type) a more
descriptive error message for its sole usage.

R=adamk

Review URL: https://codereview.chromium.org/1748183002

Cr-Commit-Position: refs/heads/master@{#34401}
      78d84530
  3. 19 Mar, 2015 1 commit
    • jochen's avatar
      Use libdl to get symbols for backtraces · 84363499
      jochen authored 
      With this patch, it'll look like this:

$ out/x64.optdebug/d8 --expose-trigger-failure test/mjsunit/mjsunit.js test/mjsunit/verify-assert-false.js

==== C stack trace ===============================

 1: V8_Fatal
 2: v8::internal::FunctionCallbackArguments::Call(void (*)(v8::FunctionCallbackInfo<v8::Value> const&))
 3: 0x727ced
 4: 0x72b6ba
 5: 0x188c7f607f9b

BUG=none
R=svenpanne@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1018313003

Cr-Commit-Position: refs/heads/master@{#27318}
      84363499
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