8000 Fix unhandled C++ exception by cgohlke · Pull Request #13289 · matplotlib/matplotlib · GitHub
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Fix unhandled C++ exception #13289

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Merged
merged 2 commits into from
Feb 2, 2019
Merged

Fix unhandled C++ exception #13289

merged 2 commits into from
Feb 2, 2019

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cgohlke
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@cgohlke cgohlke commented Jan 25, 2019

The C++ new operator will throw an C++ exception when the memory allocation fails.

PR Summary

PR Checklist

  • Has Pytest style unit tests
  • Code is Flake 8 compliant
  • New features are documented, with examples if plot related
  • Documentation is sphinx and numpydoc compliant
  • Added an entry to doc/users/next_whats_new/ if major new feature (follow instructions in README.rst there)
  • Documented in doc/api/api_changes.rst if API changed in a backward-incompatible way

@cgohlke
Fix unhandled C++ exception
e6e5cdf 
The C++ new operator will throw an C++ exception when the memory allocation fails.
@tacaswell tacaswell added this to the v3.0.3 milestone Jan 25, 2019
QuLogic
QuLogic reviewed Jan 25, 2019
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src/_tkagg.cpp Outdated
try {
destbuffer = new agg::int8u[deststride * destheight];
}
catch (...) {
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Do we need to catch everything? Is std::bad_alloc not enough?

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@cgohlke Any change you could reply to @QuLogic's comment? I agree with him on narrowing down the exception catch unless there's a specific reason not to.

@NelleV NelleV merged commit 9c1d70b into matplotlib:master Feb 2, 2019
meeseeksmachine pushed a commit to meeseeksmachine/matplotlib that referenced this pull request Feb 2, 2019
@NelleV
Backport PR matplotlib#13289: Fix unhandled C++ exception
46b8d34
@meeseeksmachine meeseeksmachine mentioned this pull request Feb 2, 2019
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NelleV commented Feb 2, 2019

Thanks!

tacaswell added a commit that referenced this pull request Feb 4, 2019
@tacaswell
Merge pull request #13347 from meeseeksmachine/auto-backport-of-pr-13…
d316c74 
…289-on-v3.0.x

Backport PR #13289 on branch v3.0.x (Fix unhandled C++ exception)
anntzer
anntzer reviewed Feb 5, 2019
View reviewed changes 8000
src/_tkagg.cpp
try {
destbuffer = new agg::int8u[deststride * destheight];
}
catch (std::bad_alloc) {
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This should have been a catch-by-reference; right now gcc warns:

src/_tkagg.cpp: In function ‘int PyAggImagePhoto(ClientData, Tcl_Interp*, int, char**)’:
src/_tkagg.cpp:121:21: warning: catching polymorphic type ‘class std::bad_alloc’ by value [-Wcatch-value=]
         catch (std::bad_alloc) {

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@NelleV NelleV NelleV left review comments

@QuLogic QuLogic QuLogic left review comments

@anntzer anntzer anntzer left review comments

@tacaswell tacaswell tacaswell approved these changes

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@cgohlke @NelleV @tacaswell @QuLogic @anntzer
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