https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124597
Bug ID: 124597
Summary: [16 Regression] ICE in verify_flow_info: BB 5 cannot
throw but has an EH edge during GIMPLE pass: forwprop
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: defsyn at gmail dot com
Target Milestone: ---
Created attachment 63988
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63988&action=edit
Preprocessed C++ source (x86_64-w64-mingw32-gcc -save-temps) reproducing ICE in
verify_flow_info during forwprop at -O2. Targets UCRT with win32 threads.
Used the latest git pull of the gcc source tree from yesterday.
While compiling Wine (libs/c++/src/support/win32/locale_win32.cpp) with
x86_64-w64-mingw32-gcc 16.0.1 (UCRT, win32 threads), I encounter an ICE.
The error occurs at -O2. The optimizer appears to simplify a block in
snprintf_l but leaves a dangling EH edge.
Error:
locale_win32.cpp:90:5: error: BB 5 cannot throw but has an EH edge
during GIMPLE pass: forwprop
internal compiler error: verify_flow_info failed
